1.英语中的助动词有下面这些: (1)be, am, is, are, was, were, been, being (2)have, has, had, having (3)shall, will, should, would (4)do, does, did 这些助动词一般没有词义,主要帮助构成谓语,表示时态、语态、语气等,或构成疑问及否定形式。 2.助动词be可用来: (1)构成进行时态: Ill be seeing her at 10 tomorrow. 我明天十点和她会面。 What have you been doing these days? 这些天来你在干什么? (2)构成被动语态: What has been assigned for todays homework? 今天留了什么作业? Preparations are being made for the speech contest. 演讲比赛的准备工作正在进行。 (3)和动词不定式构成复合谓语,表示按计划安排即将发生的事情: A new hospital is to be built in our district. 我们区要修建一所新医院。 Where are we to meet? 我们在哪里碰头? 3.助动词have可用来: (1)构成完成时态和完成进行时态: Great successes have been achieved on all fronts. 在各个战线上都取得了巨大的胜利。 |