英语问题
having done是动名词还是现在分词还是什么?为什么是having,不是have?
要看在句中所作成分了 having been there for many years, i knew more about it. 这里就是现在分词了,这是因为该动作发生在谓语动作之前,所以用分词的完成式 。分词的一般形式doing, 完成时having done I am so sorry for having kept you waiting for so long . 动名词,作了介词的宾语
答:的确是原因,因为不是因为先不知道,然后才像往常一样去上班了。 你想想看看,是不是? 这里只是说明一种原因,而没有标明动作的先后的详情>>
答:I haven't window molding catalogs on hand. catalogs 产品目录 haven't ~ something ~ o...详情>>
问:working hard vs. hard working
答:there are no defferent.详情>>