should have been有should had been吗
问题描述:
should have been有should had been吗
答
没有.should have been 是情态动词完成式.情态动词should 后面用原形 have,而 have been 又构成完成式.
should have been有should had been吗
没有.should have been 是情态动词完成式.情态动词should 后面用原形 have,而 have been 又构成完成式.