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新东方-情态动词和祈使句

新东方-情态动词和祈使句
新东方-情态动词和祈使句

Unit6 情态动词和祈使句

一、there be 句型

一)概念:1.There be句型表示某处存在某物或某人。

2.There be句型与have的区别:There be 句型和have都表示“有”的含义。区别如下:There be表示“某处存在某物或某人”;have表示“某人拥有某物/某人”,它表示所有、拥有关

系。

例:①He has two sons. 他有两个儿子。

②There are two men in the office. 办公室里有两个男人。

二)结构:

1. There is + 单数可数名词/不可数名词+ 地点状语.

2.There are + 复数名词+ 地点状语.

二)就近原则

there是引导词,在句中不充当任何成分,翻译时也不必译出。句子的主语是某人或某物,be动词要与主语(某人或某物)的数保持一致。当主语是两个或两个以上的名词时,谓语动词要与跟它最近的那个名词一致。

例:1.There is a bird in the tree. 树上有一只鸟。

2. There are two boys and a girl under the tree. 树下有两个男孩和一个女孩。

3.There is a girl and two boys under the tree .树下有一个女孩和两个男孩。

三)句型转换

1.变否定句:be+not,some变any

例: 1)There is a bike behind the tree. → There isn't a bike behind the tree.

2)There are some pictures on the wall. →There aren't any pictures on the wall.

2.变一般疑问句:1提(be动词)2变(大小写)3问号(在词尾加问号)4some 变any

例:1)There is a bike behind the tree. →Is there a bike behind the tree ?

2)There are some pictures on the wall.→Are there any pictures on the wall ?

二、情态动词can和may (铁甲战士)

一)定义:情态动词,在英文中主要用来表示说话人的看法、态度等。它很接近中文里的能愿动词。

一)特点:

1.各个情态动词自身都有一定的词义:can有两种含义:表能力和表允许。may表征求意见,有“可以”的意思。

例1)I can swim . 我会游泳。2)May/Can I come in ?我可以进来吗?

2.情态动词不能在句中独立担当谓语,要有情态动词+动词原形。例:I can run . 我会跑。

3.情态动词在句中不受任何人称,性,数变化的影响。(铁甲战士)

例:1)I can run . 2) He can run . 3) They can run . 4) Mary can run .

三)用法:

1.肯定句:主语+can/may+动词原形。

例:I can swim .我会游泳I may stay here .我可以呆在这儿。

2.否定句:can/may + not 。

例:I can’t swim .我不会游泳I may not stay here .我不可以呆在这儿。

3.一般疑问句:1提may/can,2变大小写,3问号。

例:He can swim .---- Can he swim ? Yes, he can ./ No, he can’t.

She may stay here .--- May she stay here ? Yes, she may ./ No , she may not .

三、祈使句

一)定义:

祈使句是用来表示请求、命令、叮嘱、邀请、劝告或祝愿等的句子。它的特点是通常省略主语you,以动词原形开头,末尾可用句号或感叹号。祈使句没有疑问句的形式,一般只有肯定和否定两种形式。

二)特点:

1.省略主语,没有主语。

2.以动词原形开头。

例:Open the door . 打开门。

三)结构:

1.肯定句:动词原形+宾语(+其他)。例:open the door ! 开门!

2.否定句:Don’t +动词原形+宾语(+其他)例:Don’t open the door ! 不要开门!

英语语法:祈使句

英语语法:祈使句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。 1.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,为了增强语气,能够在动词之前加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。 2.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+动名词”来表示。 No smoking. 禁止吸烟。

No parking. 禁止停车。 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. 你一定不能够再那样做了。 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? 2含有第一、第三人称主语的祈使句 Let's say good-by here. 我们在此道别吧。 Don't let him do that again.

英语语法-助动词和情态动词用法及习题

目录 1助动词和情态动词的定义 (2) 2 can,may,must (3) 3 Will you~?和Shall I(we)~? (10) 4 would和should (14) 5 have to (16) 练习题 (17) 答案 (18)

1助动词和情态动词的定义 在英语中,助动词一般没有词义,主要帮助构成谓语,表示时态、语态或构成疑问及否定形式。对于助动词,同学们一般了解即可。 情态动词与助动词不同,它有词义,但它也和助动词一样,不能单独作谓语,它必须和其他动词一起构成谓语,另外重要的一点是情态动词没有人称和数的变化;情态动词后必须跟动词原形。 (×)She cans swim well. (×)She can swims well. (○)She can swim well. (○)She swims well. 即使主语是第三人称单数(例如she)can也不能加“s”。 句子中有情态动词can时,即使主语是第三人称单数,也不能在一般动词(例如swim)上加“s”。 1 助动词的种类 1.be(am,are,is,was,were,been,being) 它与现在分词结合,可以构成进行时态(参见第九章),与过去分词结合可以构成被动语态(参见第十三章)。 I am reading the book.我正在读这本书。 The book was written by me. 这本书是我写的。 2. have(has,had,having) 它与过去分词结合,构成完成时态(参见第十一章)。 I have finished my homework. 我已经写完作业了。 3.shall(should),will(would)

情态动词总结及翻译题

1.能(力)+ 可能+ 允许 2.经过一番努力做成某事() 3.也许+ 允许+ 句首祝愿 4.也许(可能性比小) 5.不妨做某事 6.’t 不能+ 不可能 7.必须(主观)——’t 禁止 肯定(猜测)——’t 不可能 偏偏,非要? ? 猜测肯定 肯定正在做 肯定已经做 8.’t 禁止 9.’t 不必= ’t / ’t 10.语气(允诺,命令,警告,决心) 征求意见?要不要让他来见你 11. 1.应该2(义务+在情理之中的可能) 2.虚拟语气 3.竟然 4.在, , , 等引起的从句中,其谓语用+动词原形。. 5带感情色彩,常用在, 开头的疑问句中。 I ? I . 11.意愿I . 倾向. 难免,毕竟.事故难免会发生。 .男孩毕竟是男孩。 12.当时,奶奶老是()坐在那里看报纸 13.否定句和疑问句用法 你不必去那里() ( )

需要他去那里么?() () 14.需要被做某事(花朵需要浇水) 15. 它既可以作形为动词又可以作情态动词,作情态动词时,主要用于疑问句,否定句及条件句中,陈述句中很少使用但(I )除外。没人称和数的变化,但有时态变化,过去时为. 否定式为’t . 16.’t 17. 可能做过某事 本可能做某事,而实际没有/本能够做某事,而实际没有 18.‘t 本没必要做某事,而实际做了 19. 本打算做某事,而实际没有 20.情态动词的回答方式 问句肯定回答否定回答 …?, I .'t …?. ’'t . 21.情态动词表推测 肯定的推测一般用, , ()或(不用),其中,的语气最强,译为“肯定”、“准是”、“想必是”;的语气次之,译为“很可能”、“应该”,指按常理推测;(),的语气最弱,译为“也许”、“可能”。 否定推测分为两种情况: 1)语气不很肯定时,常用, 或,译为“可能不”、“也许不”。 2)否定语气较强时,则用’t,译为“根本不可能”、“想必不会”,表示惊异、怀疑的感情色彩。

助动词和情态动词

助动词和情态动词 1. ---Good morning. I've got an appointment with Miss Smith in the Personnel Department. ---Ah, good morning. You______ be Mrs. Peters. (10北京) A. might B. must C. would D. can 2. I have told you the truth. ______ I keep repeating it? (10江西) A. Must B Can C May D Will 3. Jack described his father, who _______a brave boy many years ago, as a strong–willed man (10安徽) A. would be B. would have been C. must be D. must have been 4. I_______ have watched that movie —it’ll give me horrible dreams. (10山东) A. shouldn’t B. needn’t C. couldn’t D. mustn’t 5. Doctors say that exercise is important for health, but it _______ be regular exercise. (10辽宁) A.can B.will C.must D.may 6.Wine ____ do good to people’s health if drunk properly. A. can B. should C. must D. might 7. But for the help of my English teacher, I ____ the first prize in the English Writing Competition. A. would not win B. would not have won C. would win D. would have won 8. My sister met him at the Grand Theatre yesterday afternoon, so he _____ your lecture. A. couldn’t have attended B. needn’t attend C. mustn’t have attended D. can’t attend 9. ---Has Mr. Tom White arrived? ---Yes, already. ____ he wait outside or just come in? A. Shall B. May C. Could D. Must 10. Walking in space ____ sound easy, yet great care and skills are needed. A. should B. shall C. may D. must 11. ---Amazing! You ____ wear slippers at work! ----Don’t you know it’s a fashion? A. must B. should C. can D. may 12. ---The two astronauts had been trained for long before they flew to space. ---Oh, they ____ quite a lot of difficulties. A. might go through B. may go through C. should have gone through D. must have gone through 13. ---Can I pay the bill by check? ---Sorry, sir. But it is the management rule of our hotel that payment ____ be paid in cash. A. will B. can C. should D. shall 14. ---Catherine looks sad. Did you tell her about the accident? ---Yes, but I ____ her just before her final exams.

初中英语语法大全:祈使句

初中英语语法大全:祈使句 祈使句表示请求、命令、建议等等。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。 1.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。 2.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+动名词”来表示。 No smoking.

禁止吸烟。 No parking. 禁止停车。 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? 2含有第一、第三人称主语的祈使句 Let“s say good-by here. 我们在此道别吧。 Don“t let him do that again.

be动词、助动词、情态动词讲解(基础篇)第一讲

be 动词、助动词、情态动词讲解(基础篇) 1、 用单数,反之用复数。 ◆ 句中含有be动词时: 肯定句:主语+be +其他 否定句:主语+be +not +其他 一般疑问句:Be +主语+其他+? 特殊疑问句:疑问词(what / who / when / where)+be +主语+其 他+? I am a teacher. You are right. She is 16 years old. My father is at home. The students are playing games. My teacher was ill yesterday. There is a picture on the wall. There are two books on the table. ★ be 动词用法歌: 我用am,你用are,is 连接他她它。单数名词用is,复数名词全用are。 变疑问,往前提,句末问号莫丢弃;变否定,更容易,be 后not 莫忘记; 疑问否定任你变,句首大写莫迟疑。 ★ be 动词作谓语,它后面一般跟名词、形容词或介词短语。她个子很高。 她在教室里。她是一个高个子的女孩。 2、助动词的用法。 英语句子按正常语序是“什么人或事物” + “做什么”,即,我们常说的“主语+ 谓语+ 其他” 。 ①主语为I 或复数名词、代词时:肯定句:I / We / They / The students

+动词原形+其他+。 We watch TV every night. 变否定:主语+don't +动词原形+其他+。 We don't watch TV every night. 一般疑问句Do + 主语+ 动词原形+ 其他+ ? Do you watch TV every night? Yes, we do. / No, we don 't. 特殊疑问句:疑问词+ do + 主语+ 动词原形+ 其他+ ? How often do you watch TV? ②主语为单数名词或代词时:肯定句:主语+ 动词第三人称单数形式 + 其他+ 。 He watches TV every night. 否定句:主语+ doesn't+动词原形+其他+。 He doesn't watch TV every night. 一般疑问句:Does + 主语+ 动词原形+ 其他+ ? Does he watch TV every night? Yes, he does. / No, he doesn 't. 特殊疑问句:疑问词+ does + 主语+ 动词原形+ 其他+ ? How often does he watch TV? ★主语为单数或不可数名词,谓语要用单数第三人称,反过来,看见动词用了单数第三人称,可以推知主语是单数或不可数名词。 ( )1. How __ ______ your dad help at home? A. do B. does C. is ( )2. ______ goes bad easily in summer. A. Milk B Apples C. Cakes ③过去时的句式(当句子时态为过去时时,动词用过去式,不受主语单复数的影响) 肯定句:主语+ 过去式+ 其他+ 。 He / We got up early every morning last year. 否定句:主语+ didn't + 动词原形+ 其他+ 。 He / We didn't get up early every morning last year. 一般疑问句:Did + 主语+ 动词原形+ 其他+ ? Did he / you get up early every morning last year? Yes, he

初中英语知识点总结:感叹句和祈使句

知识点总结 一、感叹句 感叹句是用来表达喜、怒、哀、乐等强烈感情的一种句式。尽管感叹句的表现形式多种多样,但主要的表现形式只有两种,即what和how引导的感叹句。what修饰名词,how 修饰形容词、副词或动词。 1、由感叹词what引导的感叹句。what修饰名词或名词短语,有以下两种形式: 1)What+a(an)+(形容词)+单数可数名词+主语+谓语!或是:What+名词词组+主语+谓语!如:What a fine day it is! 2)What+(形容词)+可数名词复数或不可数名词+主语+谓语!如:What kind women they are! What nice music it is! 2、由How引导的感叹句。how用来修饰形容词、副词或动词。其结构是:How+形容词(副词)+主语+谓语!例如: How hard the workers are working! How clever the girl is! 注意:当how修饰动词时,动词不跟着感叹词提到主语之前。How fast the runner runs! 3、what与how引导的感叹句,一般情况下可以相互转换,转换后意义不变。(具体见下)如:What an interesting story it is!==How interesting the story is! what a beautiful building it is!==How beautiful the building is! 在口语中,感叹句的主语和谓语常常省略。如:What a nice present!(省略it is)How disappointed!(省略she is或其它可作本句主、谓的词语) 二、祈使句 用于表达命令、请求、劝告、警告、禁止等的句子叫做祈使句,祈使句通常省略主语,谓语动词用原形,句尾用感叹号或句号。 1、肯定结构: 1)动词原形(+宾语)+其它成分。如:Please have a seat here. 请这边坐。有的祈使句在意思明确的情况下,动词可省略。如:This way, please. = Go this way, please. 请这边走。 2)Be + 表语(名词或形容词)+其它成分。如:Be a good boy! 要做一个好孩子! 3)Let + 宾语+ 动词原形+ 其它成分。如:Let me help you. 让我来帮你。 2、否定结构: 1)don't+动词原形+其他。如:Don't forget me! 不要忘记我! Don't be late for school! 上学不要迟到! 2)Let + 宾语+ not + 动词原形+ 其它成分。如: Let him not go. 别让他走。 3)有些可用no开头,用来表示禁止性的祈使句。如:No smoking! 禁止吸烟! 常见考法 对于感叹句和祈使句的考查,常会出现在单选和完成句子中,主要考察两种句子的用法和构成。 典型例题:You should not talk in class.(改写同义句) in class. 解析:本题考查祈使句的用法。从题意“你不应该在课堂上说话”可知,这是建议对方不要做某事的,应该用祈使句。

英语助动词和情态动词及练习

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