情态动词有很多固定的特点,通过这些特点,可以让我们更好的理解情态动词的用法。比如:情态动词无人称和数的变化,情态动词后面跟的动词须用原形,否定式构成是在情态动词后面加 "not"。个别情态动词有现在式和过去式两种形式,过去式用来表达更加客气,委婉的语气,时态性不强,可用于过去,现在或将来。情态动词属非及物动词,故没有被动语态。例如: 1.He could be here soon. 他很快就来。 2.We can't carry the heavy box. 我们搬不动那箱子。 3.I'm sorry I can't help you. 对不起,我帮不上你。 4.You can't expect to be a top student without working hard at your study . 如果你不努力学习,你就不能期望你成为尖子生。 5.This book should be found easily in the library . 这类书籍应该很容易在图书馆找到的。 6.You may meet her at the party today. 你今天或许有可能见到她. 7.You might mistake what I mean. 也许你误会我的意思了. 8.You can leave now . 你可以走了。 9.May I trouble you with a question 我能问你一个问题吗? 10.Might I have another cup of coffee? 我可以再来一杯咖啡吗? 11.We must build our motherland into a strong country with four modernization. 我们一定要将我们的祖国建成为一个具有四个现代化的强国. 12.Students ought to study hard . 学生应当努力学习. |