不同的教材有不同的语法.
1.一般过去时.
eg: I went to the park with my friend yesterday.
2.一般现在时.
eg: She usually goes to school by bike .
3.现在进行时.
eg: I am doing my homework now.
4.现在完成时.
eg:She has done her homework.
5.一般将来时.
eg:I will go to Guangzhou with my parents tomorrow.[详细]