He is very happy to does his homework.这句话does要换成do吗?迷糊了
问题描述：
He is very happy to does his homework.这句话does要换成do吗?迷糊了
答
当然要用 do 了
be happy to do sth可是这是第三人称，是因为前面用了is所以要do还是怎么？be happy to do sth这是固定用法再说了不是已经有be动词了吗，不能又有is 又有 does另外第三人称已经体现在 is 身上了