助动词后一定要加动词吗?还有在【Why are you always late for school?】中why为什么不能用do代替呢?又及：【Why are you always late for school?】中的are不是现在进行时吗?望懂得的前辈做个解答.

分类: 作业答案 • 2022-02-16 16:16:11

问题描述：

助动词后一定要加动词吗?还有在【Why are you always late for school?】中why为什么不能用do代替呢?
又及：【Why are you always late for school?】中的are不是现在进行时吗?
望懂得的前辈做个解答.

答