should的用法很難把握？全方位總結(jié)讓你牢牢掌握

1、should的用法很難把握？全方位總結(jié)讓你牢牢掌握無論在英語課本還是英語考試中，should 一詞的出現(xiàn)頻率都很高。should用法靈活，含義豐富，一直是歷年英語考試關(guān)注的重點(diǎn)，題目也花樣百出，讓很多同學(xué)感到頭疼。今天我們來總結(jié)一下它的用法，大家分辨清楚。一 . 作為助動(dòng)詞 shall 的過去式should 作為助動(dòng)詞 shall 的過去式，可以在間接引語中與第一人稱主語搭配，表示過去將來時(shí)間。例如：The group leaderannouncedthat we should(= would)begin to work soon.小組長宣布：我們不久就開始工作。A week ago， I t

2、old him that I should(= would)go to Beijing the next day.一個(gè)星期以前，我告訴他我第二天就去北京。二 . 作為情態(tài)動(dòng)詞表責(zé)任和義務(wù)should 作為情態(tài)動(dòng)詞，通常用來表示現(xiàn)在或?qū)淼呢?zé)任或義務(wù)，譯作"應(yīng)該"、"應(yīng)當(dāng)"，這時(shí)它可以和 ought to， be supposed to 互換使用。例如：You should(= are supposed to)complete your test in time.你們應(yīng)該按時(shí)做完你們的實(shí)驗(yàn)。You should(= ought to)tell your m

3、other about it at once.你應(yīng)該立即把此事告訴你媽媽。In sum， theory should be combined with practice.總之，理論應(yīng)該與實(shí)驗(yàn)相結(jié)合。三 . 作為情態(tài)動(dòng)詞表假設(shè)should 作為情態(tài)動(dòng)詞，可以用在條件狀語從句中，表示語氣較強(qiáng)的假設(shè)，譯作"萬一"、"竟然"，這時(shí)也可將 should 置于從句之首，即將 should 放在主語前面，而省略從屬連詞 if。例如：If you should fail to come, ask Mrs. Chen to work in your place. (= S

4、hould you fail to come, ask Mrs. Chen to work in your place.)萬一你來不了，就叫陳夫人代替你。If anyone should come， say I am not at home.(= Should anyone come， say I am not at home.)萬一有人來訪，就說我不在家。If it should rain tomorrow, I wouldn' t go. (= Should it rain tomorrow, I wouldn' t go.）萬一明天天下雨，我就不去了。四 . 作為情態(tài)動(dòng)詞

5、表謙遜should 作為情態(tài)動(dòng)詞，可以表示謙遜、客氣、委婉之意，譯為"可"、"倒"。例如：I should say that it would be better to try it again.我倒是認(rèn)為最好再試一試。You are mistaken, I should say. 據(jù)我看，你搞錯(cuò)了。He should expect their basketball team to win the match.他倒是希望他們的籃球隊(duì)贏得這場比賽的勝利。Should you like some tea ？ 你可喜歡喝茶？五 . should 作為情態(tài)動(dòng)詞表

6、意外should 作為情態(tài)動(dòng)詞，可以用來表示意外、驚喜或者在說話人看來是不可思議的。尤其在以 why， who， how 等開頭的修辭疑問句或某些感嘆句中常常譯為"竟會(huì)"、"居然"。例如：How should I know it ？ 我怎么會(huì)知道這件事？Why should you be so late today ？ 你今天怎么來得這么晚？When I went out, whom should I meet but my old friend Xiao Li ！ 當(dāng)我出去時(shí)，想不到竟會(huì)碰見我的老朋友小李！I don' t see any re

7、ason why he shouldn' t be happy.我不明白為什么他居然不愉快。六 . 作為情態(tài)動(dòng)詞表推測should 作為情態(tài)動(dòng)詞，可以用來表示有較大可能實(shí)現(xiàn)的猜測、推論，通常譯為"可能"、"總該吧"，相當(dāng)于 be expected to。例如：They should be home by now, I think. 我想現(xiàn)在他們總該到家了吧。The report was written after a careful investigation, so it should be reliable.這份報(bào)告是經(jīng)過周密調(diào)查后才寫成的，

8、所以應(yīng)該是可靠的。七 .作為情態(tài)動(dòng)詞用于狀語從句should 作為情態(tài)動(dòng)詞，用在由 so that， for fear that， lest 引導(dǎo)的目的狀語從句和 in case(that)引導(dǎo)的條件狀語從句中，有"能夠"、"可能"、"會(huì)"之意。例如：They got up early so that they should(= could/ might)catch the first bus in time.他們起得很早以便能及時(shí)趕上頭班公交車。He is working hared for fear that he should

9、fall behind others.他努力工作，唯恐落在別人后面。We went over the document again and again lest we should miss any of the main points.我們把文件看了一遍又一遍，唯恐忽略了其中的什么要點(diǎn)。He took an umbrella in case如果明天天下雨，運(yùn)動(dòng)會(huì)就會(huì)延期舉行。2. 用在 suggest(propose）， arrange， plan， decide， advise， order， demand， request， desire， insist 等表示"建議"

10、;、"要求"、"命令"、"決定"、"安排"、"計(jì)劃"、"主張"的動(dòng)詞后面接的賓語從句中。這里的 should 也可以省略。例如：He suggested/ proposed/ demanded/ advised that they(should)read the rules carefully.他建議 / 提議 / 要求 / 勸告他們要仔細(xì)閱讀這些規(guī)則。The doctor ordered that she(should)stay in bed for another wee

11、k.醫(yī)生囑咐她再臥床休息一個(gè)星期。He insisted that we(should)take up the matter at the meeting.他堅(jiān)持要我們在會(huì)上提出這個(gè)問題。3. 用在" It is desired/ suggested/ requested/ ordered/ proposed/ decided "之后由 that 引導(dǎo)的主語從句中， should 也可以省略。例如：It is requested that Miss Yang(should)give a performance at the party.人們要求楊小姐在聚會(huì)上表演一個(gè)節(jié)目。I

12、t has been arranged(planned)that they(should)leave the following week.已經(jīng)安排My idea/ motion/ advice/ is that we(should)do more eye exercises every day.我的意見是我們每天應(yīng)該多做眼保健操。5. 用在" It is / was necessary/ important/ strange/ incredible "或" It is a pity/ a shame/ no wonder "之后由 that 引導(dǎo)的主語

13、從句中， should 有"應(yīng)該"、"必須"、"竟然"、"居然"之意。例如：It is necessary that he(should)be sent there at once. 有必要馬上派他到那里去。It is strange that the wheel should turn so slowly.真奇怪，這個(gè)輪子竟然轉(zhuǎn)動(dòng)得如此之慢。It is a great pity/ shame/ that he should be so conceited.真遺憾，他竟會(huì)這樣自高自大。九 . " shou

14、ld have + - ed 分詞"結(jié)構(gòu)用來表達(dá)下述意義：1.表示"應(yīng)該已經(jīng)"，"本來應(yīng)該"，即過去該做某事但實(shí)際沒有做，其否定式" shouldn' t have + - ed 分詞"意為"本來不應(yīng)該"。例如：These cells should have been kept in some dry places. 這些電池本來應(yīng)該放You shouldn' t have dept those cells in thedampplace. 你本來不該把那些電池放在潮濕的地方。2.表示&q

15、uot;（估計(jì)）應(yīng)該已經(jīng)"，"大概已經(jīng)"，即對過去情況的推測。例如：They left at nine， so they should have arrived(= probably have arrived)home by no他們是九點(diǎn)鐘走的，現(xiàn)在應(yīng)該已經(jīng)到家了。They should have finished their work， for they began to do it so early.他們很早就開始工作，現(xiàn)在大概已經(jīng)干完了。3.意為"竟然已經(jīng)"，"居然已經(jīng)"，即表示說話人對已經(jīng)出現(xiàn)的事態(tài)感到"

16、驚奇、驚喜、懷疑"。例如：I' m surprised that he should have been so foolish. 我很奇怪，他竟然會(huì)這么傻。I' m amazed that Mr. Harris should have said nothing about the matter.這件事，哈里斯先生竟然只字未提，對此我大為驚異。It is wonderful that you should have achieved so much these years.這幾年你竟然取得如此大的成就，你真了不起。此外， should 還可以出現(xiàn)在" should be doing sth "或" should have been doing sth "等句式中，表示"應(yīng)該正在"或表示說話