时间:2019-02-13 作者:英语课 分类:英文语法词汇


英语课

   学习祈使句的四个要点


  祈使句是表示请求、命令、劝告、祝愿或建议的句子。祈使句的主语一般为第二人称,但往往省去不用。同学们在学习祈使句时应注意以下几点:
  一、祈使句谓语用何动词形式
  英语祈使句的谓语总是用动词原形。如:
  Be quiet! 别说话!
  Come earlier next time. 下次早点来。
  Have a good time. 愿你玩得痛快。
  Go and tell her. 去告诉她吧。
  注:有时为了加强语气,可在动词前加do。如:
  Do be careful. 务请小心。
  Do come on time. 务必请准时来。
  二、肯定祈使句如何变成否定祈使句
  祈使句否定式的构成方法是在动词原形前加don’t:
  Don’t be late. 不要迟到。
  Don’t speak so loud. 别这么大声说话。
  Don’t walk on the grass. 不要在草坪上走。
  Don’t lose 1 the key. 别把钥匙丢了。
  Don’t come unless 2 I telephone. 除非我打电话,否则你别来。
  三、与please连用以使语气委婉
  为使语气委婉,通常将祈使句与please连用。Please可用于祈使句的句首(其后通常不用逗号)或句末(其前通常用逗号)。如:
  Please don’t get angry. 请不要生气。
  Please drive more slowly 3. 请开得慢一点。
  Please cut me a piece of cake. 请给我切一块蛋糕。
  Please try to be quiet. 请设法保持安静。
  Please repeat 4 what you’ve just said 5. 请把你刚才说的话重复一遍。
  四、关于以let开头的祈使句
  Let’s eat out tonight. 我们今晚出去吃饭吧。
  Let me have a try. 我来试一试。
  Let me show you how to do it. 我来告诉你怎样做。
  Let every man do his best. 让每个人人尽其才。
  Let the meat cook slowly. 把肉用慢火炖。
  注意:
  1. 这类祈使句的否定式有两种形式。如:
  Let’s not hurry. / Don’t let’s hurry. 我们不要太急。
  2. let后用作宾语补足语的动词要用原形,不能用带to的不定式。

v.丢失,失去,迷失,(钟表)走慢
  • I always lose at cards, with my bad luck.我不走运,打牌总输。
  • I can always lose myself in a good book.一本好书会使我爱不释手。
conj.如果不,除非
  • You will fail unless you work hard.如果你不积极工作,就会失败。
  • Don't ask me to explain unless you really don't understand.不要叫我解释,除非你真的不懂。
adv.慢地,缓慢地
  • Speak more slowly,please.请说慢一点。
  • Do it slowly and carefully.要慢慢仔细地做。
n.重复,反复;vt.重复,复述;vi.重复;adj.重复的,反复的
  • There will be a repeat of this talk next week.下星期将重播这次讲话。
  • History will not repeat itself.历史不会重演。
v.动词say的过去式、过去分词
  • He said to me that he could not come.他对我说他不能来。
  • He said to his mother that he would do it by himself.他对他的母亲说他将自己独立做那件事。
标签: 祈使句
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