问题描述：
助动词,谓语动词
助动词能做谓语动词么?
比如 have,is ,was.
After he had finished his homework ,he went home.
比如句中的had 和 finished 都分别算哪种成分呢？
助动词能做谓语动词么?
比如 have,is ,was.
After he had finished his homework ,he went home.
比如句中的had 和 finished 都分别算哪种成分呢？
问题解答：
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