Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course "Learn Grammar from Me", a series of micro courses directed at beginner-level Chinese students around the world (corresponding to Levels 1-3), selects the most important ones from the “Appendix A (Normative) Grammar Level Syllabus” of Chinese Proficiency Grading Standards for International Chinese Language Proficiency (GF 0025-2021). Through lecturers’ explanation and PPT courseware, it uses the virtual image synthesis technology to explain the difficult language points. The micro course totals 90 class hours in 720 minutes, with approximate 8 minutes for each class hour. The course, available in English, Spanish, French, and Russian, is divided into four parts: Lead-in, Explanation, Practice, and Summary, and has the characteristics of universality, integration and openness. It is suitable for all textbooks in the international Chinese language market, and can meet Chinese students' diversified needs in grammar learning.  Show All Course Trailer Course Syllabus 1. A Special Sentence Pattern: the 是-Sentence 2. Ways to Ask Questions 3. A Special Sentence Pattern: the 有-Sentence 1 4. Ask Questions Using Interrogative Pronouns 5. The Adverb of Degree 都 6. The Adverb of Degree 很 7. The Interrogative Pronouns 几 and 多少 8. Nouns of Locality 9. The Negative Adverbs 不 and 没 10. The Optative Verbs 想 and 要 11. 了 Indicating Change 12. The Preposition Introducing Time and Locality 在 13. Progressive Aspect 14. The Adverb of Degree真 15. The Preposition Introducing Time and Locality 从 16. The Optative Verb 会 17. The Optative Verb 怎么 18. 了 Indicating Completion 19. The volitive auxiliary ：能 20. A Special Sentence Pattern: Comparative Sentence 1 21. The Correlative Adverb 还 22. The Adverb of Degree 太 23. The Negative Adverb 别 24. Parallel Compound Sentences Using 一边……一边…… 25. The Conjunctions 或者 and 还是 26. A Special Sentence Pattern: the Sentence with Serial Verbs 27. The Personal Pronoun咱、咱们 28. The Modal Adverb 就 29. The Modal Adverb 才 30. The Preposition Introducing the Object 离 31. The Optative Verbs 该 and 应该 32. Complements of State 33. The Adverbs of Frequency 再 and 又 34. Complements of Frequency 35. A Special Sentence Pattern：the 有-Sentence 2 36. A Special Sentence Pattern: the 是……的-Sentence 1 37. Verb + 着 Indicating Continuation 38. Ask Questions Using 好吗, 可以吗, 行吗, or 怎么样 39. Continuing Compound Sentences Using 先……，再/然后…… 40. Reduplication of Verbs 41. The Volitive Verb 愿意 42. The Adverb of Degree有（一）点儿 43. A Special Sentence Pattern: Existential Sentence 44. The Adverb of Time 还 45. A Special Sentence Pattern: Comparative Sentence 2 46. Reduplication of Adjectives 47. Cause-Effect Compound Sentences Using 因为……，所以…… 48. A Special Sentence Pattern: Comparative Sentence 3 49. The Particle 过 Indicating Past Experience 50. Transitional Compound Sentences Using 虽然……，但是/可是…… 51. The Adverbs of Degree 多 and 多么 52. The Modal Adverb 都 53. The Set Pattern 又……又…… 54. Complements of Result 55. Directional Compound Complements 1  56. Progressive Compound Sentences Using 不但……，而且…… 57. Alternative Compound Sentences Using（是）……，还是…… 58. Use就 for Emphasis 59. Hypothetical Compound Sentences Using 如果……，就…… 60. Conditional Compound Sentences Using 只要……，就…… 61. The Modal Adverb 正好 62. The Modal Adverb 好像 63. The Set Phrase 越来越 64. Verb-Object Separable Words 65. Complements of Possibility: Verb + 得/不 + Others 66. Use 不是……吗? for Emphasis in a Rhetorical Question  67. Quantitative Complements: Complements of Frequency with Objects 68. Subject-Predicate Sentences: Sentences with Subject-Predicate Phrases as the Predicates  69. Complement of Duration Indicating the Duration of an Action 70. The Adverb of Time 才 71. The Use of Arbitrary Reference of Interrogative Pronouns 72. A Special Sentence Pattern: the 把-Sentence  73. Alternative Compound Sentences Using 不是……，就是…… 74. The Set Pattern: 一……也/都 + 不/没…… 75. The Modal Adverb 只好 76. The Set Phrase 看起来 77. The Set Pattern: 除了……（以外），……还/也/都…… 78. Directional Compound Complements 2 79. A Special Sentence Pattern: Comparative Sentence 4 80. Hypothetical Compound Sentences Using 要是……，就…… 81. The Use of Indefinite Reference of Interrogative Pronouns 82. The Adverbs of Manner 互相 and 相互 83. A Special Sentence Pattern: Sentence Using Reduplication of Verbs 84. Conditional Compound Sentences Using 只有……，才…… 85. A Special Sentence Pattern: the 被-Sentence 86. The Modal Adverb 到底 87. The Modal Adverb 反正 88. The Spoken Pattern：X就X（点儿）吧 89. The Modal Adverb 白 90. Use 是 for Emphasis Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

Bridging West and East Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course Bridging West and East is the documentary series to explore the history of cultural and linguistic exchange between East and West, and to show how Chinese language and culture is being promoted abroad.  The whole film is divided into 6 episodes, 50 minutes each, including The Power of Language, The Destiny of Culture, The Step of Spring, The Grand Vista Is Invisible, Different yet Beautiful and The Call of the Future.  The documentary was created for two years. The film crew headed to more than 50 countries and regions in five continents and interviewed more than 200 well-known university presidents, famous experts and scholars, as well as Chinese and foreign directors, teachers and volunteers of Confucius Institutes.  To show the learners the history of cultural and linguistic exchange between East and West, and how Chinese language and culture is being promoted abroad.  This course is presented in the form of Chinese dubbing and Chinese and English subtitles. Show All Course Trailer Course Syllabus Part 1 The Power of Language Part 2 The Destiny of Culture Part 3 The Step of Spring Part 4 The Grand Vista Is Invisible Part 5 Different yet Beautiful Part 6 The Call of the Future Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

Bravo Objects Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course This series introduces some common “objects” that can be seen in every Chinese family to foreigners and analyzes the wisdom and vitality of Chinese traditional culture which are exactly the habits and values that Chinese people cherish today. Introduce the values and characteristics of traditional Chinese ethics and etiquette to the world. This course has 3 chapters, including 15 animations, presented in the form of Chinese dubbed nursery rhymes or aincludingnimations without dubbing. Show All Course Trailer Course Syllabus Chapter 1  Bravo Year Part 1 Bravo Year Part 2 The Spring Festival Part 3 The Winter Solstice Part 4 The Monster Nian Part 5 The Lantern Festival Chapter 2 Four Friends From A Chinese Study Part 1 Introduction Part 2 Chinese Writing Brushes Part 3 Chinese Ink Sticks Part 4 Chinese Rice Paper Part 5 Chinese Inkstones Chapter 3  Friends From Afar Part 1 Introduction Part 2 Chairs Part 3 Tea Part 4 Bowls Part 5 Chopsticks Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

《豚宝宝》系列课——阿凡提斗大盗 30 人学过 2021-06-28 摄于 中国 授课老师：中文联盟 （亚洲 · 中国） 适用对象：儿童学习者 难度：零基础-初级 学习方向：中文学习 上传时间：2021/06/28 标签: 《豚宝宝》系列课程 订阅 豚宝宝系列课程提供科学、艺术、社会、健康、语言五大领域的儿童轻动画，希望通过有趣的内容和互动的形式来实现教育启蒙的功能。 主张「创想」和「乐读」，强调「博学」和「动手」，鼓励“用眼观察、用脑思考、用心感受和分享”，进而引导孩子们走上一条求知探索的快乐成长之路。 1 精品推荐 换一换 A foreigner speaks Chinese | The Chinese complex of a Ukrainian girl - Chinese Bridge for Middle School Students A foreigner speaks Chinese | Forbidden City, here we are - Chinese Bridge for Middle School Students Stewed duck with Dendrobium and fish maw - delicacy A foreigner speaks Chinese. I want to drink real Kung Fu tea in China From Douban goddess to curator of Art Museum (Wanwan, the youngest curator of Art Museum in China) #Initial consonant#Lesson One (II) [Teaching in Spanish] #Initial consonant#Lesson One (II) [Teaching in English] Stir-fried bean sprouts with black tiger palm fungus - - delicacy 评论 立即提交 全部评论 You have no courses yet, please go to to find them.

The Interesting Words: Confused Words (Elementary) [Russian Version] Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course The Interesting Words: Confused Words (Elementary) is a series of microlectures that are designed according to the Standard for Chinese Proficiency in International Chinese Language Education (GF0025-2021). Based on their frequency of use in real life, 30 pairs of confused words are included in this course, which are selected from the vocabularies from Band 1 to Band 3 according to their elementariness and chances to be confused. This course consists of 30 microlectures, each explaining a pair of confused words. A microlecture is about 5 minutes that allows one to gain a thorough knowledge of the subject through lead-in, differentiation of the words, summary, practice, etc. It is featured by various dialogues in daily life as examples, which would promote effective learning and all-round improvement in Chinese skills. This course is an elementary one that is made up of 30 microlectures, 150 minutes in total. It will be taught in English, with subtitles in Spanish, French and Russian provided.   Show All Course Trailer Course Syllabus 1．时间 时候   2．帮助 帮忙  3．主要 重要 4．重复 反复 5．发现 发明 6．刚刚 刚才 7．适合 合适 8．忽然 突然 9．经过 通过 10．后来 以后 11．满意 满足 12．以为 认为 13．要求 请求 14．表示 表达 15．经历 经验 16．从前 以前 17．原来 本来 18．特点 特色 19．生产 产生 20．场所 场合 21．持续 继续 22．创造 创作 23．到达 达到 24．危险 风向 25．功夫 工夫 26．观察 观看 27．规定 规范 28．开展 展开 29．主动自动 30．注意主意 Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

The Interesting Words: Confused Words (Elementary)[English Version] Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course The Interesting Words: Confused Words (Elementary) is a series of microlectures that are designed according to the Standard for Chinese Proficiency in International Chinese Language Education (GF0025-2021). Based on their frequency of use in real life, 30 pairs of confused words are included in this course, which are selected from the vocabularies from Band 1 to Band 3 according to their elementariness and chances to be confused. This course consists of 30 microlectures, each explaining a pair of confused words. A microlecture is about 5 minutes that allows one to gain a thorough knowledge of the subject through lead-in, differentiation of the words, summary, practice, etc. It is featured by various dialogues in daily life as examples, which would promote effective learning and all-round improvement in Chinese skills. This course is an elementary one that is made up of 30 microlectures, 150 minutes in total. It will be taught in English, with subtitles in Spanish, French and Russian provided.   Show All Course Trailer Course Syllabus 1．时间 时候   2．帮助 帮忙  3．主要 重要 4．重复 反复 5．发现 发明 6．刚刚 刚才 7．适合 合适 8．忽然 突然 9．经过 通过 10．后来 以后 11．满意 满足 12．以为 认为 13．要求 请求 14．表示 表达 15．经历 经验 16．从前 以前 17．原来 本来 18．特点 特色 19．生产 产生 20．场所 场合 21．持续 继续 22．创造 创作 23．到达 达到 24．危险 风向 25．功夫 工夫 26．观察 观看 27．规定 规范 28．开展 展开 29．主动自动 30．注意主意 Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

Chinese Language--Express to HSK （Volume 1） Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course Chinese Language--Express to HSK is a series of MOOCs for Chinese beginners. There are all together 32 lessons in this course. In addition to the knowledge of phonetics and Chinese characters, it covers all the new words and basic grammar points. Upon completion of this course, Chinese proficiency of the learners will have reached HSK Level 3. This course combines the learning of language structure and function with the introduction to Chinese culture, so as to integrate "learning, examination and application" and comprehensively improve Chinese proficiency of the learners. In learning this course, you can enter a Chinese world through text sitcoms, where the teachers will explain the meaning and usage of new words and grammar points in detail. After learning the text, you can also make an easy review of what you have learned by singing Rap, testing yourself through after-class exercises. This is the course for Volume one. The lectures take Mandarin Chinese as the instruction language with bilingual subtitles of Chinese & English. Show All Course Trailer Course Syllabus Basic knowledge 1  Chinese characters Basic knowledge 2  Chinese phonetics Lesson 1  Hello Lesson 2  Is this your cell phone? Lesson 3  How many people are there in your family? Lesson 4  Has the movie started? Lesson 5  Where is the administration building? Lesson 6  What's the price of the apples per half kilo? Lesson 7  What sport do you like? Lesson 8  It's time to eat Lesson 9  The rain is heavier than yesterday Lesson 10  I want to john the basketball team Lesson 11  Does he need an injection? Lesson 12  Did you come by plane? Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

快乐汉语-第一课 栾梦娇 70 人学过 2021-07-08 摄于 中国 授课老师：栾梦娇 （亚洲 · 中国） 适用对象：青少年学习者 难度：零基础-初级 学习方向：中文学习 上传时间：2021/07/08 标签: 快乐汉语 订阅 本课程为初级课程，教学语言为英语，共24课时，适合11-16岁的零基础汉语非母语者学习。 本课程以《快乐汉语》第二册教材为基础，选择具有丰富国际汉语教学经验的优秀教师主讲。拍摄所使用的教学素材、脚本设计、人物活动等，均源于国际汉语教学实践。课程所呈现的课堂活动轻松自然，话题真实有趣，资源信息丰富，兼备教学与师范功能，即可直接应用于课堂辅助教学，也可满足汉语教师进修的需要。 4 精品推荐 换一换 National Style Eulogizing: The Book of Songs · Bei Feng · Lv Yi Happy Chinese - Lesson Eight Wang Lingyu In a market Small class of Thai Session V - Ask for directions A foreigner speaks Chinese | The Chinese character ability was amazing - Chinese Bridge for College Students A foreigner speaks Chinese | The first line of the couplet: Look at the wood in the door leisurely Can you write the second line of the couplet? - Chinese Bridge for College Students Word discrimination: "a little" and "a bit" Music 评论 立即提交 全部评论 You have no courses yet, please go to to find them.

The Interesting Words: Confused Words (Elementary) [Spanish Version] Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course The Interesting Words: Confused Words (Elementary) is a series of microlectures that are designed according to the Standard for Chinese Proficiency in International Chinese Language Education (GF0025-2021). Based on their frequency of use in real life, 30 pairs of confused words are included in this course, which are selected from the vocabularies from Band 1 to Band 3 according to their elementariness and chances to be confused. This course consists of 30 microlectures, each explaining a pair of confused words. A microlecture is about 5 minutes that allows one to gain a thorough knowledge of the subject through lead-in, differentiation of the words, summary, practice, etc. It is featured by various dialogues in daily life as examples, which would promote effective learning and all-round improvement in Chinese skills. This course is an elementary one that is made up of 30 microlectures, 150 minutes in total. It will be taught in English, with subtitles in Spanish, French and Russian provided. Show All Course Trailer Course Syllabus 1．时间 时候   2．帮助 帮忙  3．主要 重要 4．重复 反复 5．发现 发明 6．刚刚 刚才 7．适合 合适 8．忽然 突然 9．经过 通过 10．后来 以后 11．满意 满足 12．以为 认为 13．要求 请求 14．表示 表达 15．经历 经验 16．从前 以前 17．原来 本来 18．特点 特色 19．生产 产生 20．场所 场合 21．持续 继续 22．创造 创作 23．到达 达到 24．危险 风向 25．功夫 工夫 26．观察 观看 27．规定 规范 28．开展 展开 29．主动自动 30．注意主意 Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学

Baduanjin Exercise Free to Watch About This Course Course Trailer Course Syllabus Course provider About This Course Baduanjin is an independent and complete set of fitness exercises, which originated in the Northern Song Dynasty and still plays a role for thousands of years. As a traditional sports project, Baduanjin  is  popular among Chinese language learners and lovers of traditional Chinese culture in international Chinese education. Li Tingkui, associate professor of Physical Education College of Jilin University, was specially invited by Northeast Center for International Chinese Language Education of Jilin University to make a series of videos of Baduanjin teaching. Each lesson lasts about 10 minutes, explaining one action in detail, which is innovative in design and easy to learn. It is explained in Chinese and presented with Chinese and English subtitles. This video can help Chinese teachers teach in class and help teachers and students learn by themselves. Welcome to the Baduanjin course and feel the charm of traditional Chinese culture. Show All Course Trailer Course Syllabus 1. Overview on Baduanjin 2. Basic body shape and preparation 3. First movement: Two hands holding up the sky to smooth San Jiao. 4. Second movement: Move arms like drawing bows both on the left and right. 5. Third movement: Raise one arm to harmonize the spleen and stomach. 6. Fourth movement: Look backward to eliminate five fatigues and seven illnesses. 7. Fifth movement: Shake the head and sway the buttocks to extinguish fire in the heart. 8. Sixth movement:Two hands hold the feet to strengthen the kidney and lower back. 9. Seventh movement: Glare and punch to help the liver Qi flow smoothly. 10. Eighth movement: Lift your heels seven times to rid all illnesses. 11. Complete exercise with full set of movements Show All About Us | Website Disclaimer | Privacy Policy Follow Us Scan the QR Code Follow the ChinesePlus on Facebook Scan the QR Code Follow the ChinesePlus on Twitter Scan the QR Code Follow the ChinesePlus on WeChat Official Account Scan the QR Code Follow the ChinesePlus on Weibo Official Account Scan the QR Code Follow the ChinesePlus on TikTok Official Account Copyright © ChinesePlus Beijing ICP File No. 13044591 Network Audiovisual License No. 0109385 Beijing ICP Certificate No. 13044591 Continental Han Feng Network Technology (Beijing) Co., Ltd. 7天免费试学 无限制访问专项课程中的全部课程 观看课程视频、试做作业，参与论坛等等。 随时取消 无扣分，如果这不适合您，在试用结束前取消即可。 7天试学结束后需支付课程价格以继续学习 完成本课程的全部学习及考核后，您将获得本课程的结课证书。 开始免费试学