你们好，恭喜你们的考试都很好。因为咱们有一半的学生不能来上课， 我想要你们follow Rutgers University 的中文教程。 Here is the link: Rutgers University .  The reason for me to do so is that this site can be a better self-study material: it has text, vocabulary, exercise, grammar explanation, audio etc...  I want to go over 基础课程(elementary curriculum) 第1课到第5课。 Please make sure you know all the vocabulary and can say it with great fluency.