谓语动词一律用原形.句子中通常不用主语,句末用惊叹号或者句号,用降调. 1含有第二人称主语的祈使句 Be careful!小心! Don''t make such a noise.不要这么吵.
肯定的祈使句
a.句型:动词原形~.(省略主语) Stand up.起立. Be quiet,please.请安静. b.有时,为了加强语气,可以在动词之前加do Do sit down. 务必请坐. Do study hard. 一定要努力学习. 比较 祈使句和陈述句陈述句: You sit down. 你坐下来. 祈使句: Sit down.坐下 (省略主语you) c.用客气的语气表示祈使句时,可在句首或句尾加上please,但如果在句尾加please,那在please之前一定要加一个逗号“,”. Go this way,please. 请这边走. d.祈使句中如果有唤语,一定要用逗号“,”隔开,放在句首或句尾. Li Ming,come here. 李明,过来. Come here,Li Ming. 过来,李明.
否定的祈使句
句型:Don''t +动词原形~ Don''t swim in the river. 别在河里游泳. Don''t be late.别迟到. Please don''t be noisy. 请不要大声喧哗. 注意 表示禁止时,尤其是标语等也可用“No+名词/动名词”来表示. No smoking! 禁止吸烟! No parking! 禁止停车! No entry! 不准入内! No litter! 不准乱扔杂物!
编辑本段英语祈使句句型转换
祈使句与陈述句的改写 1.祈使句=You must …(陈述句) Come here .过来. =You must come here . 你必须过来. Don''t do that again. 你一定不可以再那样做了. 2.Please +祈使句=Will you (please) ~?(陈述句) Please help me .请帮帮我. =Will you (please) help me? 你愿意帮我的忙吗? Come here on time ,please .请准时到这儿. =Will you (please) come here on time ? 请你准时到好吗? 3.含有第一、第三人称主语的祈使句 Let‘s say good-bye here. 我们在此道别吧. Don't let him do that again. 别让他再那么做了.. 1.肯定的祈使句 句型:·Let+第一人称(me,us)~. ·Let+第三人称代词(宾格:him,her,it,them)或名词~. Let's go at once. 咱们马上动身吧. Let me try again. 让我再试试. Let Tom go there himself. 让汤姆自己去那儿. 注意 Let's包括对方,Let us不包括对方.反意疑问句时最明显. Let's go,shall we? 咱们去吧,怎么样? Let us go,will you? 让我们去吧,行吗? (征求对方的意见) 2.否定的祈使句 句型:·Let‘s(us,me)+not +动词原形~. ·Don’t let +第三人称代词的宾格或名词+动词原形. Let's not say anything about it. 对于这件事,咱们什么也不要说. Don't let them play with fire. 别让他们玩火. 句型转换 祈使句有时相当一个“if”引导的条件状语从句. 祈使句:Use your head and you''ll find a way. 条件句:If you use your head,you''ll find a way. 注意 回答Let's~的反意疑问句句型时,肯定时用Yes,let''s.否定时用NO,let''s not. 祈使句变反意疑问句的方法: 祈使句后的反意疑问句形式 a,Let's表示说话人向对方提出建议,简短问句的主语用 we表示,问句用 shall we或shan't we 如: Let's have a cup of tea ,shall we (shan't we) b,Let me或Let us表示听话人提出请求,问句用 will you或won't you . Let me have a rest , will you (won't you ) c,其它的祈使句后可以加一个简短问句,使语气变得客气一些. 如:Have a rest , will you . Stand up , will (won't) you .
祈使句的特殊用法:
祈使句有时候相当有一个由if 引导的条件状语从句. 如:Study harder ,and you will catch up with the others in your class. 努力学习些,你会赶上班里其他同学的. If you study harder ,you will catch up with the others in your class. 如果你学习再努力些,你会赶上班上其他同学的.