自考英语复习资料:情态动词详解(6)
8. would
(1)委婉请求或命令
Would you take a seat? 请坐!
(2)表过去习惯性动作转自环 球 网 校edu24ol.com
He would sit there for hours, doing nothing. 他常一连几个小时坐在那里,什么也不做。
(3)表过去的一种倾向
He told us that the box would not open. 他告诉我们盒子打不开。
(4)表对过去的猜测
That would be in 1966, I think. 我想那大概发生在1966年。
9. dare 和 dared
(1)敢
How dare you speak to me like that? 你怎敢那样对我说话?
No one dared speak of it. 当时没人敢谈论此事。
(2)有时后面跟不定式,用作行为动词转自环 球 网 校edu24ol.com
He dares to think, to speak, and to act. 他敢想,敢说,敢干。
10. need
(1)“需要”,用于否定句和疑问句中
Need I show you my passport? ――Yes, you must. 我需要出示护照吗?是的。
――No, you needn't. 不,不必啦。
We didn't need to call the doctor. 我们不必请大夫。
(2) needn't + have + pp 本不必做
She needn't have watered the flowers. 她本不必浇花。