should 用法讲与

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语法第二节课情态动词can should资料讲解

语法第二节课情态动词can should资料讲解

情态动词can . should情态动词有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。

今天我们来学can和should.Can1. 特点:情态动词无人称和数的变化;不能单独使用,必须与其后的动词原形构成谓语。

I can speak English. We can swim. He can sing. You can play the guitar. She can draw. They can dance.2.概念:1)表示能力(体力、知识、技能)。

e.g. Can you lift this heavy box? 你能举起这个大盒子吗?(体力)Mary can speak three languages. 玛丽能说三种语言。

(知识)Can you skate?你能滑冰吗?(技能)2)表示请求和允许。

--Can I go now? -- Yes, you can. / No, you can’t.3)表示客观可能性(客观原因形成的能力)。

e.g. They’ve changed the timetable, so we can go by bus instead.This hall can hold 500 people at least. 这个大厅至少能容纳500人。

4)表示推测(惊讶、怀疑、不相信的态度),用于疑问句、否定句和感叹句中。

e.g. Can this be true?This can’t be done by him.How can this be true?3.变否定句直接在can后加“not”I can not speak English. We can not swim. He can not sing.You can not play the guitar. She can not draw. They can not dance.4.变一般疑问句直接把can提前, 肯定回答用yes, 否定回答用no.例Can you speak English? Yes, I can. /No, I can’t.Can you play the guitar? Yes, we can. / No, we can’t.Can she draw? Yes, she can. /No, she can’t.Can he sing? Yes, he can./ No, he can’t.Can they dance? Yes, they can./ No, they can’t.总结:情态动词can,后面总是接动词原形,没有人称和数的变化.意思是”能,会”.情动can表能力, 和行为动词不分离.不管主语如何变, can的模样永不变.只要出现情动can, 动词原形后面站.一般疑问can提前, 否定can后not添.Should1.should表示义务或责任建议或劝告。

Should与Ought to的讲解和练习

Should与Ought to的讲解和练习

Should与Ought toI. 复习1. Some people can live without meat.2. May I use the phone please, Mr. White?3. Could you tell me something about the book?4. You must not smoke here.5. What flavor would you like, chocolate or strawberry?6. We should put rubbish in the bin.7. She shouldn’t discuss it.8. Should we discuss it now? / Ought we to discuss it now?-- Yes, we should/ ought to. -- No, we shouldn’t/ ought not to.9. The students ought not to sleep in the class.10. Tom ought to hand in his homework on time.II. 二者区别:时态Should Ought to 肯定句sb. should do sth. sb. ought to do sth.否定句sb. should not do sth. sb. ought not to do sth. 一般疑问句Should sb. do sth.? Ought sb. to do sth.?简略回答Yes, sb. should do sth.No, sb. should not / shouldn’t do sth.Yes, sb. ought to do sth.No, sb. ought not /oughtn’t to do sth.should和ought to在用法上要注意以下3点:1.没有人称和数的变化。

Unit 1 单元语法精讲(should的用法和反身代词)八年级英语下册单元核心知识点复习(人教版)

Unit 1 单元语法精讲(should的用法和反身代词)八年级英语下册单元核心知识点复习(人教版)

Practice Three
改写句子
5. 他独自完成了这项任务。 He finished the task _____b_y__ _h_i_m__se_l_f_.
6. 昨天托尼在体育课上受伤了。 Tony ___h_u__rt__ _h_i_m_s_e_l_f_ in P. E. class yesterday.
people. 3. I think teenagers_s_h_o_u_l_d_n_'_t spend too much time shopping online. 4. Kids __s_h_o_u_l_d__ tell their parents when they go out. 5. —__S_h_o_u_l_d___I bring a small gift when I visit my friends?
3. 父母应该鼓励孩子尽可能自己照顾自己。 Parents __s_h_o_u_l_d__ encourage children to ___t_a_k_e___ ____ca_r_e___ _____o_f___
themselves. 4. 你不应该购买你不需要的东西。
You ___s_h_o_u_ld_n_’_t___b_u_y___ anything that you don’t need.
7. 上周在派对我们玩得很开心。 Last week, we _en__jo_y_e_d__ _o_u_r_s_el_v_e_s in the party. 请随便吃些鱼,琳达。 ______H__el_p___y_o_u__rs_e_lf___t_o__ _s_o_m_e____fi_sh_______, Linda.
Practice Three

情态动词讲解can,may,should,must,oughtto区别及用法,,练习加详解

情态动词讲解can,may,should,must,oughtto区别及用法,,练习加详解

薅一、情态动词主要用来表示说话人的看法、态度等蚄 1.can(could)节 1) 表示能力, could 主要指过去时间。

例如:螈①Twoeyescanseemorethanone.?两只眼比一只眼看得清。

羆②Couldthegirlreadbeforeshewenttoschool??这女孩上学前能识字吗?莆因为 can 不能和其他助动词连用,所以表示将来式时用willbeableto肁例: Youwillbeabletoskateafteryouhavepracticedittwoorthreetimes.肁注意: Can 表示一贯的能力,beableto表示客观能力和通过努力可以达到的能力莇 Ican ’tswim.ButIamsureIwillbeabletoswimthroughmorepracticing.袄 Thefirespreadthroughthehotel,buteveryonewasabletogetout肄 2) 表示允许。

例如:膁①CanIhavealookatyournewpen?? 我可以看一看你的新钢笔吗?螈②Heaskedwhetherhecouldta kethebookoutofthereading—room.?他问他可不可以把书带出阅览室。

薆3) 表惊异、怀疑、不相信等态度。

主要用于否定句、疑问句或感叹句中。

例如:袃①Wherecan(could)theyhavegoneto?? 他们会去哪儿了呢?芁②Howcanyoubesocareless??你怎么这么粗心?腿 4) 比较委婉客气地提出问题或陈述看法。

例如:肄①Can(Could)youlendmeahand??帮我一把好吗?薂②I ’mafraidwecouldn ’tgiveyou ananswertoday.? 恐怕我们今天不能给你答复。

莁 Could/can+havedone结构表示对过去发生的事情的“怀疑”或“不肯定”。

2020年河北衡水高中英语新高考语法学习讲义(039)情态动词shall、should用法知识点总结整理

2020年河北衡水高中英语新高考语法学习讲义(039)情态动词shall、should用法知识点总结整理

2020年河北衡水高中英语新高考语法学习讲义(039)情态动词shall、should用法知识点总结整理shall1. 表示建议,用在问句中征求对方的意见和指示,这时可以用于第一人称和第三人称。

如:Shall I turn on the light?要开灯吗?(我把灯打开好吗)Shall we sit here?咱们坐这儿怎么样?(坐这儿好吗)What shall we eat?我们该吃什么?(征求对方意见)比较:What will we eat?我们将吃什么?(单纯指未来)Shall Brandon come to see you?你要不要布兰登来看你?比较:Will Brandon come to see you?布兰登会不会来看你?Shall those books be sent over to you at once?那些书要不要马上给你送过来?Shall we begin now?我们现在开始,好吗?Shall I get you some more coffee?我再给您倒点咖啡喝,好吗?例题:—What's the name?—Khulaifi. I spell that for you?A. ShallB. WouldC. CanD. Might【答案选A】Shall I / we...?表示“我/ 我们……好吗?”,通常用来征求对方意见,常用于第一人称。

2. 表示命令,用于陈述句,与第二人称或第三人称连用,表示允诺、命令、警告和强制,或表示说话人的决心等。

如:We shall do what we are told.我们必须要按所吩咐的去做。

You shall not get it so easily next time.你下次就不会轻易得到它。

If you work well,you shall get a chance of promotion.你要是好好干,就有提升的机会。

should的含义和用法

should的含义和用法

should的含义和用法“should”是一个情态动词,用于表达建议、命令、责任、义务、可能性或推测等含义。

在不同的语境和句子结构中,“should”可以有不同的用法和含义。

一种常见的用法是表达建议或劝告,意为“应该”。

例如,“You should eat more vegetables.”(你应该多吃蔬菜。

)在这个句子中,“should”表达了对健康饮食的建议。

另外,“should”也可以用于表达命令或要求,意为“应当”。

这种用法通常出现在规章制度、法律条文或正式的场合中。

例如,“You should arrive on time.”(你应该准时到达。

)在这个句子中,“should”强调了准时到达的重要性。

此外,“should”还可以用于表达责任或义务,意为“应当要”。

例如,“We should help each other.”(我们应该互相帮助。

)在这个句子中,“should”强调了互相帮助是一种责任或义务。

在表达可能性时,“should”通常用于表示按常理或常规推测某事可能发生或应该发生,意为“应该会”或“理应会”。

例如,“She should be here by now.”(她现在应该在这里。

)在这个句子中,“should”表示了根据时间推断她应该已经到达。

需要注意的是,“should”作为情态动词时,其后接动词原形。

同时,“should”在否定句中通常缩写为“shouldn't”,表示“不应该”或“不应当”。

总的来说,“should”是一个具有多种含义和用法的情态动词,可以用于表达建议、命令、责任、义务、可能性或推测等。

在具体使用时需要根据语境和句子结构来确定其正确的含义和用法。

should用法归纳与练习had better知识讲解

should用法归纳与练习had better知识讲解

should用法归纳一、Should 表示义务、责任、常译为“应当”,“应该”,或表示一种估计的情况,译成“按理应当”,“估计......”。

Why should I pay him? 为什么我该付给他钱?They should be there by now,I think. 我估计,他们现在到那儿了。

二、用于成语中I should like to......“我想(做)......”I should like to ask the teacher a question. 我想问老师一个问题。

三、shouldn’t :不应该(表示责备);应该不,应该没有(表示推测)。

如:You shouldn't be so lazy.你不应该这么懒惰。

There shouldn't be any problem with your listening.你的听力应该没有问题了。

用should 或shouldn't 填空。

1. All of us ________study hard and learn English well.2. As a student, you_______ eat in class.3. You _______speak to your parents like this ,you must be polite (有礼貌)4. You __________eat less and take more exercise if want ot be healthier and stronger.5. My mother is very tired after work, I________ do some housework for her.had better(常简略为'd better)是一固定词组,had better"最好",用于表示对别人的劝告、建议或表示一种愿望。

Should与Ought-to的讲解和练习.doc

Should与Ought-to的讲解和练习.doc

Should 与Ought toi.复习1.Some people can live without meat.2.May I use the phone please, Mr. White?3.Could you tell me something about the book?4.You must not smoke here.5.What flavor would you like, chocolate or strawbeiTy?6.We should put rubbish in the bin.7.She shouldn't discuss it.8.Should we discuss it now? / Ought we to discuss it now?~ Yes, we should/ ought to. 一No, we shouldn't/ ought not to.9.The students ought not to sleep in the class.10.Tom ought to hand in his homework on time.II.二者区别:Should Ought to意思表示主观看法,有“劝告、建议啲意思,即“按我的想法该如何''强调主观看法,语气比较委婉•一些建议,劝说时,译作“应当”比should语气强,更多反映客观情况,“有义务"或“必要勺故某事,有时带有责备或督促的意味,译为“应当,应该”.否定表示某动作不一定要做表示做某事一定是错误的虚拟语态X时态Should Ought to 肯定句sb. should do sth. sb. ought to do sth.否定句sb. should not do sth. sb. ought not to do sth.一般疑问句Should sb. do sth.? Ought sb. to do sth.?简略回答Yes, sb. should do sth. Yes, sb. ought to do sth.No, sb. should not / shouldn't do sth. No, sb. ought not /oughtn't to do sth.ought to具体用法:1・(表示义务、责任等)应当,应该You ought to work harder than that.2.(表示劝告、建议等)应该,You don't look well. You ought to go to see the doct 0匸3.(表示猜测、期望)总应该,理应It ought to be a fine day tomorrow morning.4.u ought to + have +过去分词”表示过去应做某事而实际未做You ought to have told me that (but you didn't). 这时ought to和should可以互换届用。

初二英语语法情态动词should用法讲解.doc

初二英语语法情态动词should用法讲解.doc

初二英语语法情态动词should用法讲解【英语语法】
情态动词should 应该学会使用
should作为情态动词用,常常表示意外、惊奇、不能理解等,有竟会的意思,例如:
HowshouldIknow?我怎么知道?
Whyshouldyoubesolatetoday?你今天为什么来得这么晚?
should有时表示应当做或发生的事,例如:
Weshouldhelpeachother.我们应当互相帮助。

我们在使用时要注意以下几点:
1.用于表示应该或不应该的概念。

此时常指长辈教导或责备晚辈。

例如:
Youshouldbeherewithcleanhands.你应该把手洗干净了再来。

2.用于提出意见劝导别人。

例如:
Youshouldgotothedoctorifyoufeelill.
如果你感觉不舒服,你最好去看医生。

3.用于表示可能性。

should的这一用法是考试中常常出现的
考点之一。

例如:
Weshouldarrivebysuppertime.我们在晚饭前就能到了。

Sheshouldbehereanymoment.她随时都可能来。

should 用法总结

should 用法总结

should 用法讲与练一 . should 作为助动词shall 的过去式,可以在间接引语中与第一人称主语搭配,表示过去将来时间。

例如:The group leader announced that we should (= would )begin to work soon.A week ago,I told him that I should (= would)go to Beijing the next day.二 . should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和ought to,be supposed to 互换使用。

例如:You should (= are supposed to )complete your test in time.You should (= ought to )tell your mother about it at once.In sum,theory should be combined with practice.三 . should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将should 置于从句之首,即将should 放在主语前面,而省略从属连词if .例如:If you should fail to come,ask Mrs. Chen to work in your place. (= Should you fail to come,ask Mrs. Chen to work in your place. )If anyone should come,say I am not at home. (= Should anyone come,say I am not at home. )If it should rain tomorrow,I wouldn't go. (= Should it rain tomorrow,I wouldn't go.)四 . should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。

Should与Ought to的讲解和练习

Should与Ought to的讲解和练习

Should与OughttoI.复习1.?Some?people?can?live?without?meat.?2.?May?I?use?the?phone?please,?Mr.?White??3.?Could?you?tell?me?something?about?the?book??4.?You?must?not?smoke?here.?1.没有人称和数的变化。

2.后面接动词原形。

3.可用来构成否定句、疑问句及简明答语。

5.?Parents?______?raise?their?children?until?they?are?18.?A.?should??B.?ought?to??C.?may??D.?would?6.??They?______?discuss?it?now.?A.?ought?to?not??B.?not?ought?to??C.?don’t?ought?to??D.?ought?not?to?7.???______?he?______?his?parents?about?this?problem??A.?Should,?listens??B.?Ought,?listens?to??C.?Should,?listen?to??D.?Ought,?listen?to?8.?He?______?here?on?time.?A.?should?came??B.?should?come??C.?should?comes??D.?should?coming?9.??You?______?buy?the?ticket?before?getting?on?the?train.?A.?ought??B.?should??C.?mustn’t??D.?can’t?10.To?protect?our?eyes,?we?______?keep?enough?distance?from?books?when?we?read?them.?A.?shouldn’t??B.?ought?not??C.?ought?not?to??D.?ought?to?11.?Tom?______?say?sorry?to?Tracy?because?he?broke?her?bike.?_______________________________________________________________________?b)?Tom?should?look?after?his?little?sister.?(改为一般疑问句)?_______________________________________________________________________?c)?They?ought?to?help?their?parents?do?the?housework.?(改为一般疑问句)?________________________________________________________________________?d)?I?ought?to?buy?a?new?bike.?(改为否定句)?________________________________________________________________________?e)?Lucy?should?get?to?school?on?time.?(根据划线部分提问)?________________________________________________________________________?f)?Should?we?eat?a?lot?of?junk?food??(作否定回答)?_________________________________________________________________________?g)?I?have?to?finish?my?homework?before?going?to?bed.?(改为否定句)???。

八年级下册语法专题一:情态动词should与could知识讲解

八年级下册语法专题一:情态动词should与could知识讲解

八年级下册语法专题一:情态动词s h o u l d与c o u l d专题归类复习一情态动词should与could的用法●语法讲解1.should是情态动词shall的过去式,但有时并不表示过去。

(1)表示委婉的劝告或建议,意为“应该”。

如:You should hand in your composition at once.你应该立刻交上你的作文。

(2)表示可能性或推断,意为“可能;应该”。

如:I think they should be there now.我想他们现在应该在那里。

(3)用于特殊疑问句中,表示意外、惊奇、不能理解等强烈感情。

如:How should you know that?你是怎么知道那件事的?What should you do to relax?你该做什么来放松呢?2.could是情态动词can的过去式,但有时并不表示过去。

(1)表示提议,比can更客气、委婉。

I could do the shopping for you, if you are tired.如果你累了,我能帮你买东西。

(2)表示请求,语气比can更客气、委婉。

Could you show me the way to the hospital?你能告诉我去医院的路吗?●语法精练Ⅰ.单项选择( )1.Schools________allow students at least one houra day for sports.A.would B.mightC.should D.could( )2.________you tell me how to get to the postoffice?A.Must B.NeedC.Could D.Should( )3.—When can I come for the photos? I need themtomorrow afternoon.—They________be ready by 12:00.A.can B.shouldC.might D.need( )4.—Could I borrow your dictionary?—Of course you________.A.can B.mustC.should D.will( )5.The basketball________his.He loves playingbasketball.A.maybe B.may beC.may is D.may not( )6.We________keep the new traffic law and learn how to protect ourselves.A.will B.wouldC.shall D.should( )7.—Could you please help me do my homework?—Sorry.I________.You________do it by yourself.A.could; mayB.couldn't; shouldC.can't; shouldD.can't; may( )8.—How was the youth club last night, Mark?—It was great fun.You________come.A.must B.canC.should D.mayⅡ.根据句意用should或could填空1.Sally________make dumplings by herself when she was only five years old.2.In school, all the classmates__________get on wellwith each other.3.You________call her if you have something important to tell her.4.You_________not drive after drinking.5._________I use your mobile phone,please?。

3. 英语语法知识点第3讲:should竟然可以表示“竟然”

3. 英语语法知识点第3讲:should竟然可以表示“竟然”

英语语法知识点第3讲:should竟然可以表示“竟然”关于should我们最常见的用法就是用来表示义务、责任、建议或劝告,有“应当、应该”的意思。

比如说:1 It should be a nice day tomorrow. 明天应该是个好天气。

2 Australia should win this match. 澳大利亚队应该能够打赢这场比赛。

3 What should I do? Should I trust him? 我该怎么办?我应该相信他吗?4 Children shouldn’t be allowed to play in the street. 不应该让儿童在街上玩。

但是你知道should还有一些特殊的用法吗?Should不用来表示劝告和建议,而是表示“竟然”或者“万一”!一、当should用在包括“absurd, amazing, annoying, funny, ludicrous, odd, ridiculous, strange, surprising, unthinkable”等形容同后面的从句时,should带有一种很“惊奇”的感情色彩,这时的should就应该翻译为“竟然”。

比如:5 It is ridiculous that we should be short of water in a country where it is always raining. 在经常下雨的国家里,我们竟然会缺水,这简直是荒谬!6 It is unthinkable that he should be so careless. 真不可思议,他竟然如此粗心大意!7 It's add that you and I should have the same name. 很奇怪,我们的名字竟然相同!二、should表示“万一”时常常出现在lest, for fear that和in case引导的从句中。

情态动词should的用法讲解

情态动词should的用法讲解

should(1)表“劝告、建议”时,可译成“应该”,这时可用ought to替换。

You should keep your promise.你应该遵守诺言。

Young people should learn how to use computers. 年轻人应该学如何应用计算机。

(2)表示委婉陈述自己的意见。

I should think you are right.我想你是对的。

I should advise you not to go now.我劝你现在别走。

(3)表示惊异赞叹、忧虑、惋惜、欢欣、不满等情绪。

Why should you think so?你为何这样想呢?(不满)It's strange that it should be so hot today.很奇怪,今天怎么这么热。

(惊奇)It's wonderful that you should have achieved so much in these years.这几年你们有了这样大的成绩,真了不起。

(赞叹)(4)表推测意为“可能,该”,表示对现在情况、将来情况的推测。

They should be home by now.他们现在应当到家了。

The book you need should be in our library.你需要的那本书我们图书馆应该有。

It’s nearly seven o’clock. Jack should be here at any moment.现在快要七点了,杰克随时会到。

-When can I come for the photos? I need them tomorrow afternoon. 我什么时候能取照片?明天下午要用。

- They should be ready by 12:00.明天12点前应该能冲好。

(5)“should+完成时”,在肯定句中,表示应完成而实际未完成的事情;如果用在否定句中,则表示发生了不应当发生的事件。

2020年河北衡水高中英语新高考语法学习讲义(033)助动词shall, will, should, would用法知识点总结整理

2020年河北衡水高中英语新高考语法学习讲义(033)助动词shall, will, should, would用法知识点总结整理

2020年河北衡水高中英语新高考语法学习讲义(033)助动词shall, will, should, would用法知识点总结整理助动词shall助动词shall肯定式为shall,否定式为shall not。

shall 用来构成将来时。

在表示一般将来情况时,shall 用于第一人称在现代英语中,shall 常用will替代。

如:We shall / will arrive tomorrow.我们将在明天到。

I shall =I will be rather busy next week.我下周会很忙。

Shall we be back in time?我们能及时返回吗?Shall you be free tonight?你今晚有空吗?What shall you do next?你下步怎么办?When shall you be here?你什么时候到这里来?助动词will助动词will肯定式为will,否定式为will not。

will用来构成将来时。

一般用于第二、三人称。

如:You will be in time if you hurry.如果你抓紧时间,你会来得及的。

Grace will be nineteen next month.格雷斯下个月就满19岁了。

Tomorrow will be Saturday.明天是星期六。

You will have got to Shanghai by this time tomorrow.明天这时候你就已经到上海了。

Will they have anything to do tonight?他们今晚有事吗?例题:1. —Isn't Jim back yet?—No, but I think he in half an hour.A. returnedB. will returnC. has returnedD. returns【答案选B】“in+一段时间”表示多长时间之后,是一般将来时的标志。

should的用法精讲(八年级下册U1)

should的用法精讲(八年级下册U1)

总结词
详细描述
表示建议、推荐、责任 或义务
在现在时态中,should 常用于表达建议、推荐 或责任,也可以表示对 某种行为的义务性要求。 例如,“You should eat a balanced diet to stay healthy.”(你应 该保持均衡饮食以保持 健康。)
表示惊讶、怀疑或不寻 4;时需要注意语气,避免 过于绝对或过于委婉,根据语境选择 合适的语气。
避免混淆
需要区分"should"与"will","can", "may"等其他情态动词的用法,避免 混淆。
05
练习与巩固
选择题练习
题目
You _____ be tired after such a long walk.
当表示需要但不强调建议时,need 更常用,如 "I need to buy a new pair of shoes."
04
should在实际语境中的应用
在日常对话中的应用
提出建议
在建议或推荐时,使用"should" 表示更强烈或更正式的建议,例 如:"You should try this new
将来时态
总结词
表示将来应该做的事情
详细描述
在将来时态中,should常用于表达将来应该做的事情,强调责任或义务。例如, “You should finish your homework before you watch TV.”(你应该先完 成作业再看电视。)
将来时态
总结词
表示对未来情况的推测
详细描述
表达期望
在表达对未来的期望或希望时, 可以使用"should"来强调,例如: "The company should achieve
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should 用法讲与练should 一词在中学英语课本中出现频率很高。

它的用法灵活、含义丰富,因而一直是历年中考关注的热点。

现将其具体用法分述如下:一 . should 作为助动词shall 的过去式,可以在间接引语中与第一人称主语搭配,表示过去将来时间。

例如:The group leader announced that we should (= would )begin to work soon.小组长宣布:我们不久就开始工作。

A week ago,I told him that I should (= would)go to Beijing the next day.一个星期以前,我告诉他我第二天就去北京。

二 . should 作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和ought to,be supposed to 互换使用。

例如:You should (= are supposed to )complete your test in time.你们应该按时做完你们的实验。

You should (= ought to )tell your mother about it at once.你应该立即把此事告诉你妈妈。

In sum,theory should be combined with practice.总之,理论应该与实验相结合。

三 . should 作为情态动词,可以用在条件状语从句中,表示语气较强的假设,译作“万一”、“竟然”,这时也可将should 置于从句之首,即将should 放在主语前面,而省略从属连词if .例如:If you should fail to come,ask Mrs Chen to work in your place. (= Should you fail to come,ask Mrs Chen to work in your place. )万一你来不了,就叫陈夫人代替你。

If anyone should come,say I am not at home. (= Should anyone come,say I am not at home. )万一有人来访,就说我不在家。

If it should rain tomorrow,I wouldn't go. (= Should it rain tomorrow,I wouldn't go.)万一明天天下雨,我就不去了。

四 . should 作为情态动词,可以表示谦逊、客气、委婉之意,译为“可……”、“倒……”。

例如:I should say that it would be better to try it again.我倒是认为最好再试一试。

You are mistaken,I should say. 据我看,你搞错了。

He should expect their basketball team to win the match.他倒是希望他们的篮球队赢得这场比赛的胜利。

Should you like some tea ?你可喜欢喝茶?五 . should 作为情态动词,可以用来表示意外、惊喜或者在说话人看来是不可思议的。

尤其在以why,who,how 等开头的修辞疑问句或某些感叹句中常常译为“竟会”、“居然”。

例如:How should I know it ?我怎么会知道这件事?Why should you be so late today ?你今天怎么来得这么晚?When I went out,whom should I meet but my old friend Xiao Li !当我出去时,想不到竟会碰见我的老朋友小李!I don't see any reason why he shouldn't be happy.我不明白为什么他居然不愉快。

六 . should 作为情态动词,可以用来表示有较大可能实现的猜测、推论,通常译为“可能”、“总该……吧”,相当于be expected to .例如:They should be home by now,I think. 我想现在他们总该到家了吧。

The report was written after a careful investigation,so it should be reliable.这份报告是经过周密调查后才写成的,所以应该是可靠的。

七 . should 作为情态动词,用在由so that,for fear that,lest 引导的目的状语从句和in case (that)引导的条件状语从句中,有“能够”、“可能”、“会”之意。

例如:They got up early so that they should (= could/ might)catch the first bus in time.他们起得很早以便能及时赶上头班公交车。

He is working hared for fear that he should fall behind others.他努力工作,唯恐落在别人后面。

We went over the document again and again lest we should miss any of the main points. 我们把文件看了一遍又一遍,唯恐忽略了其中的什么要点。

He took an umbrella in case (that)it should rain.他带了一把雨伞,以防天下雨。

八 . should 作为情态动词,可以用于下列虚拟语气句中:1. 用在表示与将来事实相反的条件状语从句中,构成“ If …… should (do sth)……,…… would/ could/ might (do sth.)…… ”句式。

例如:If it should (或were to )rain tomorrow,the sports meeting would be put off. (= Should it rain tomorrow/ Were it to rain tomorrow,the sports meeting would be put off.)如果明天天下雨,运动会就会延期举行。

2. 用在suggest (propose),arrange,plan,decide,,advise,order,demand,request,desire,insist 等表示“建议”、“要求”、“命令”、“决定”、“安排”、“计划”、“主张”的动词后面接的宾语从句中。

这里的should 也可以省略。

例如:He suggested/ proposed/ demanded/ advised that they (should)read the rules carefully.他建议/ 提议/ 要求/ 劝告他们要仔细阅读这些规则。

The doctor ordered that she (should)stay in bed for another week.医生嘱咐她再卧床休息一个星期。

He insisted that we (should )take up the matter at the meeting.他坚持要我们在会上提出这个问题。

3. 用在“ It is desired/ suggested/ requested/ ordered/ proposed/ decided ”之后由that 引导的主语从句中,should 也可以省略。

例如:It is requested that Miss Yang (should)give a performance at the party.人们要求杨小姐在聚会上表演一个节目。

It has been arranged (planned)that they (should)leave the following week.已经安排(计划)让他们下星期动身。

It has been decided that the meeting (should)be postponed till next Saturday.已经决定会议推迟到下周六举行。

4. 用在suggestion,motion,proposal,order,plan,idea,advice,request,decision,requiry 等名词后面接的表语从句或同位语从句中,should 也可以省略。

例如:We all agreed to his suggestion (proposal)that we (should)go to Nanjing for a visit.我们都同意他提出的要我们到南京去游览的建议。

(should 用于同位语从句中)My idea/ motion/ advice/ is that we (should)do more eye exercises every day.我的意见是我们每天应该多做眼保健操。

(should用于表语从句中)5. 用在“ It is / was necessary/ important/ strange/ incredible ”或“ It is a pity/ a shame/ no wonder ”之后由that 引导的主语从句中,should 有“应该”、“必须”、“竟然”、“居然”之意。

例如:It is necessary that he (should)be sent there at once. 有必要马上派他到那里去。

It is strange that the wheel should turn so slowly.真奇怪,这个轮子竟然转动得如此之慢。

It is a great pity/ shame/ that he should be so conceited.真遗憾,他竟会这样自高自大。

九. “ should have + - ed 分词”结构用来表达下述意义:1. 表示“应该已经……”,“本来应该……”,即过去该做某事但实际没有做,其否定式“ shouldn't have + - ed 分词”意为“本来不应该……”。

例如:These cells should have been kept in somedry places. 这些电池本来应该放(保存)在干燥的地方。

(但实际上没有把它们放在干燥的地方。

)You shouldn't have dept those cells in the damp place. 你本来不该把那些电池放在潮湿的地方。

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