高中英語 Unit 4 Cyberspace Period 3 Grammar同步課件 北師大版必修2

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1、配北師大版英語必修配北師大版英語必修2 Period ThreeGrammar配北師大版英語必修配北師大版英語必修2 1willwill除了具有“將要”“愿意” 等基本含義外，還可表示推測(cè)、猜測(cè)、推論、估計(jì)等，表示依據(jù)直覺、知識(shí)、經(jīng)驗(yàn)等做出的揣測(cè)，也可表示根據(jù)自然規(guī)律必然會(huì)發(fā)生。will與be going to表示推測(cè)配北師大版英語必修配北師大版英語必修2 Theres a ring at the door.That will be the postman，I suppose.門鈴響了，我想可能是郵差來了。It will be snowing now in London.現(xiàn)在倫敦大概在下雪吧。

2、Oil and water will not mix.油和水不相溶。配北師大版英語必修配北師大版英語必修2 2be going tobe going to除了具有“將要”“ 準(zhǔn)備”“ 打算”等基本含義外，還可表示預(yù)計(jì)要發(fā)生、不可避免會(huì)發(fā)生之意，而且這種預(yù)計(jì)或推斷是根據(jù)目前觀察到的某種跡象、證據(jù)作出的。英國語言學(xué)家R.Quirk將be going to的這種含義稱為“現(xiàn)在原因的將來結(jié)果(future result of present cause)”。Youre going to have trouble with that car before long.這輛車很快就會(huì)給你帶來麻煩的。配北師大

3、版英語必修配北師大版英語必修2 Im going to be fifty next month.下個(gè)月我就50歲了。Shes going to have a baby.她要生孩子了。I mean to go，and nothing is going to stop me.我想走，什么也阻止不了我。It looks as if hes going to win the game.他似乎快要贏得比賽了。Look at these dark cloudstheres going to be a storm.看看那些烏云，暴風(fēng)雨快來了。配北師大版英語必修配北師大版英語必修2 條件句包含條件狀語從句的句

4、子通常稱為條件句。條件句有兩類，一類是真實(shí)條件句，一類是非真實(shí)條件句。1真實(shí)條件句有些條件句表示可能成為現(xiàn)實(shí)的情況，被稱為真實(shí)條件句。真實(shí)條件句的構(gòu)成和用法如下：配北師大版英語必修配北師大版英語必修2 (1)由“if引導(dǎo)的條件狀語從句(一般現(xiàn)在時(shí))主句(陳述句一般將來時(shí))”構(gòu)成，表示假設(shè)的情況有可能發(fā)生。If the rain stops，the match will begin.如果雨停了，就要開始比賽。If you go to the Science Museum，you will see a lot of interesting exhibitions.如果去科技博物館，你就會(huì)看到很多有

5、趣的展覽。If people dont stop polluting the air，animals and plants will soon die.如果空氣污染得不到控制，動(dòng)植物不久將滅亡。配北師大版英語必修配北師大版英語必修2 (2)由“if引導(dǎo)的條件狀語從句(一般現(xiàn)在時(shí))主句(祈使句)”構(gòu)成，常用來表達(dá)建議、請(qǐng)求、命令等。If you feel sleepy，go to bed.如果你困了，就上床睡吧。If you want an interesting day out，visit the Science Museum.如果你想度過有趣的一天，就去參觀科技博物館。If she come

6、s，phone me.如果她來了，給我打個(gè)電話。配北師大版英語必修配北師大版英語必修2 2非真實(shí)條件句(虛擬條件句)有些條件句表示不大可能實(shí)現(xiàn)的或與事實(shí)相反的情況，被稱為非真實(shí)條件句。非真實(shí)條件句的用法和謂語形式如下表：用 法if從句主 句表示與過去事實(shí)相反had過去分詞should/would/could/mighthave過去分詞表示與現(xiàn)在事實(shí)相反過去式(be動(dòng)詞用were)should/would/could/might動(dòng)詞原形表示與將來事實(shí)相反過去式(be動(dòng)詞用were)should/would/could/might動(dòng)詞原形should/were to動(dòng)詞原形配北師大版英語必修配北師

7、大版英語必修2 If I were you，I would invite him to the party.如果我是你，我會(huì)邀請(qǐng)他參加聚會(huì)。If I didnt do exercise every day，I wouldnt be so strong.如果不是每天鍛煉，我身體不會(huì)那么結(jié)實(shí)的。If we should fail in this matter，we would be ruined.如果這件事失敗，我們就毀了。If I asked him，hed help us.如果向他提出請(qǐng)求，他會(huì)幫我們。配北師大版英語必修配北師大版英語必修2 I would have arrived much

8、earlier if I had not been caught in the traffic.如果沒有堵車，我會(huì)早一點(diǎn)兒到達(dá)。If I had met Li Hua，I could have told him.如果我碰見了李華，我就告訴他了。If they had invited her，she would have attended it.如果他們邀請(qǐng)她，她就會(huì)參加了。配北師大版英語必修配北師大版英語必修2 語法專練1If my car_more reliable，I would have driven to Lhasa instead of flying last summer.Awas

9、 Bhad beenCshould be Dwould be【答案】B句意：如果我的車更加可靠的話，去年夏天我就開車去拉薩而不乘飛機(jī)啦。本題考查虛擬語氣。if從句與過去事實(shí)相反，故應(yīng)用過去完成時(shí)。配北師大版英語必修配北師大版英語必修2 2Your new product_better if it is advertised on TV.Asells BsoldCwill sell Dwould sell【答案】C條件句用一般現(xiàn)在時(shí)，主句用將來時(shí)。配北師大版英語必修配北師大版英語必修2 3By the time you have finished this book，your meal _col

10、d.Agets Bhas gotCwill get Dis getting【答案】C句意：到你完成這本書的時(shí)候，你的飯將會(huì)變涼了?？疾闀r(shí)態(tài)。根據(jù)前一句by the time you have finished this book，可知是飯菜涼是將來的事情。故選C。配北師大版英語必修配北師大版英語必修2 4Look at the brown jeep！It was so fast！Im afraid there _an accident.Ashould be Bis going to beCis sure to be Dmust be【答案】B依靠觀察到的跡象做出的判斷。配北師大版英語必修配北師

11、大版英語必修2 5Be careful！Dont get the orange juice on your skirt，for it_.Aisnt washing out Bwont be washed outCisnt washed out Dwont wash out【答案】D表示根據(jù)知識(shí)做出的判斷，表示主語的特征，用主動(dòng)式。配北師大版英語必修配北師大版英語必修2 6Our lab_next month.Awill finish Bwill be finishedCbe finished Dfinish【答案】B根據(jù)題意應(yīng)該用將來時(shí)的被動(dòng)式。配北師大版英語必修配北師大版英語必修2 7If

12、their marketing plans succeed，they_ their sales by 20 percent.Awill increase Bhave been increasingChave increased Dwould be increasing【答案】A條件狀語從句中，從句用一般現(xiàn)在時(shí)，主句用一般將來時(shí)。配北師大版英語必修配北師大版英語必修2 8If you plant watermelon seeds in the spring，you _fresh watermelon in the fall.Aeat Bwould eatChave eaten Dwill be

13、eating【答案】D句意：如果在春天種下西瓜種子，秋天你就會(huì)吃到新鮮的西瓜。本題考查動(dòng)詞時(shí)態(tài)。A項(xiàng)為一般現(xiàn)在時(shí)，B項(xiàng)為過去將來時(shí)態(tài)，C項(xiàng)為現(xiàn)在完成時(shí)，D項(xiàng)為將來進(jìn)行時(shí)，表將來某時(shí)間正在進(jìn)行或某階段內(nèi)一直在進(jìn)行的動(dòng)作。in the fall為表示將來的時(shí)間狀語，故答案為D。配北師大版英語必修配北師大版英語必修2 9This printer is of good quality.If it_break down within the first year，we would repair it at our expense.Awould BshouldCcould Dmight【答案】Bif引導(dǎo)的

14、條件狀語從句表示與將來事實(shí)相反的假設(shè)，謂語動(dòng)詞應(yīng)用“should動(dòng)詞原形”。配北師大版英語必修配北師大版英語必修2 10If he_my advice，he wouldnt have lost his job.Afollowed Bshould followChad followed Dwould follow【答案】C句意：如果他(當(dāng)時(shí))接受我的建議，就不會(huì)丟掉他的工作了。本題考查虛擬語氣。因?yàn)閕f條件句表示與過去事實(shí)相反，故用過去完成時(shí)。配北師大版英語必修配北師大版英語必修2 11Why are you taking the picture down?I_the wall.Awill pa

15、int Bam paintingCam going to paint Dwill have painted【答案】Cbe going to表示計(jì)劃打算好要發(fā)生的事。配北師大版英語必修配北師大版英語必修2 12I thought I asked you to fix the radio.Oh，Im sorry.I_it right away.Aam to do Bwill doCwas about to do Dam going to do【答案】Bwill表示說話時(shí)臨時(shí)做出的決定。配北師大版英語必修配北師大版英語必修2 13You will be late_you leave immediat

16、ely.Aunless Buntil Cif Dor【答案】Aunless：除非，如果不；相當(dāng)于if.not。配北師大版英語必修配北師大版英語必修2 14Can I stay at home tomorrow?Yes，you can if it_.Awill snow Bis going to snowCsnows Dsnowed【答案】C條件狀語從句中用一般現(xiàn)在時(shí)表示將來。配北師大版英語必修配北師大版英語必修2 15I didnt see your sister at the meeting.If she_，she would have met my brother.Ahas come Bd

17、id comeCcame Dhad come【答案】D與過去事實(shí)相反的假設(shè)，從句用過去完成時(shí)。配北師大版英語必修配北師大版英語必修2 16They_have arrived at lunchtime but their flight was delayed.Awill Bcan Cmust Dshould【答案】D考查虛擬語氣的用法。句意：他們本該午飯時(shí)到達(dá)，但他們的航班推遲了。will have done：將來可以完成；can have done：可能做過嗎？表示對(duì)過去行為的懷疑，用于疑問句；must have done：一定做過某事，表示對(duì)過去事情的肯定推測(cè)；should have don

18、e：本來應(yīng)該做某事，而實(shí)際沒做。but their flight was delayed說明他們本來該到達(dá)卻沒有到達(dá)，因此選D。配北師大版英語必修配北師大版英語必修2 17I_sooner but I didnt know that they were waiting for me.Ahad come Bwas comingCwould come Dwould have come【答案】D考查虛擬語氣的用法。句意：我本來可以早點(diǎn)來，但我真不知道他們?cè)诘任?。but I didnt know表示了過去時(shí)間，因此前句是對(duì)過去的虛擬，用主語should/would/could/mighthave do

19、ne表達(dá)，故選D。配北師大版英語必修配北師大版英語必修2 18Pity you missed the lecture on nuclear pollution.I_it，but I was busy preparing for a job interview.Aattended Bhad attendedCwould attend Dwould have attended【答案】D考查虛擬語氣的用法。句意：真可惜你錯(cuò)過了那場(chǎng)有關(guān)核污染的講座。我本可以去聽的，但我當(dāng)時(shí)忙于工作面試。對(duì)過去的虛擬，用“主語should/would/could/mighthave done”表達(dá)，故選D。配北師大版英語必修配北師大版英語必修2 19I_through that bitter Period without your generous help.Acouldnt have gone Bdidnt goCwouldnt go Dhadnt gone【答案】A考查虛擬語氣的用法。句意：沒有你的慷慨幫助，我是不可能度過那段痛苦的時(shí)期的。that bitter period表示過去的時(shí)間，對(duì)過去的虛擬語氣用“主語should/would/ could/mighthave done”表達(dá)，故選A。