题目

1)The children (not be) at home .They are playing ball games in the park
1)The children (not be) at home .They are playing ball games in the park
2) — why (not be) Li Dong going to school today?
— He (be) ill.
求答案和语法点

提问时间：2020-11-02

答案

1,填入：are not.因为后面说他们正在公园里打球,所以他们现在肯定不在家里.把be动词改为否定形式就可以了,是一般现在时.
2,didn't ,was.根据句子的语境可知他因为生病而没有去学校,说明这件事情已经发生,所以用一般过去时.