the magic show.we began singing.提问sing为啥不用原型,要+ing?
问题描述:
the magic show.we began singing.提问sing为啥不用原型,要+ing?
答
we began singing中began是谓语动词,一句话里只能有一个谓语动词(除非你加了连词或者从句,但是这里没有),而sing明显就不是谓语动词了,非谓语动词有三种形态,分别为to do,doing,和done,这里用doing是固定搭配.begin...