①你最好把时间和地点弄清楚。
②他早起以确保能及时赶上火车。
2. It doesn’t matter if a teacher is not organized.
▲matter 用作动词，表示“关系重大，要紧”，句中含有if, what, who, where等，常用于否定句和疑问句，通常用it作形式主语。
①He said it didn’t matter if we made mistakes.
②你今天这是怎么了？
③这台旧电视有什么毛病？
④The thing that is not whether you fail or not, but whether you try or not.
A. matters B. cares C. considers D. minds
3. and she explains English grammar so clearly that ever I can understand it!
