八年級條件狀語從句講練(附答案)

1、八年級條件狀語從句講練(附答案)八年級條件狀語從句講練(附答案)八年級條件狀語從句講練(附答案)V:1.0精細(xì)整理，僅供參考 八年級條件狀語從句講練(附答案)日期：20 xx年X月 引導(dǎo)條件狀語從句的連接詞主要有：if(如果）、unless（除非）或 as long as（只要）等。unless在意思上等于if.not。一、條件狀語從句用法1、引導(dǎo)條件狀語從句最常用的連詞是if,由if引導(dǎo)的條件狀語從句表示在某種條件下某事很可能發(fā)生。如: If you ask him, he will help you.如果你請他幫忙,他會幫你的。 If you fail in the exam, you w

2、ill let him down.如果你考試不及格,你會讓他失望的。 另外,if從句還表示不可實現(xiàn)的條件或根本不可能存在的條件,也就是一種虛擬的條件或假設(shè),從句多用一般過去時或過去完成時。如: If I were you, I would invite him to the party.如果我是你,我會邀請他參加聚會。 2、unless = if.not. 除非,若不,除非在的時候例如：Lets go out for a walk unless you are too tired. =If you are not too tired, lets go out for a walk.Unless

3、 it rains, the game will be played.除非下雨,比賽將照常進行。3、so/as long as只要例句;You may borrow my book as long as you keep it clean. 只要你保持書的清 潔，你就可以把我的書借去。 So long as youre happy, it doesnt matter what you do. 只要你高興，你做什么都沒有關(guān)系。二、時態(tài)問題在條件狀語從句中，要注意“主將從現(xiàn)”的規(guī)定，即主句用一般將來時，從句用一般現(xiàn)在時表示將來時。例句：I will come to see you if I hav

4、e time. 我有時間，我就來看你。常見考法對于條件狀語從句的考查，多以單選和完形填空的形式，從時態(tài)的角度設(shè)題，考查學(xué)生靈活運用的能力，或從連詞的意義角度讓大家選擇連詞。典型例題：If he _in half an hour,we _wait for him. A. wont come ,wont B.wont come ,dont C.doesnt come ,wont D.will come ,dont 解析：本題考查條件狀語從句“主將從現(xiàn)”的運用。題干的意思是“如果他一小時后不來，我們將不會等他了”，從“in half an hour”，“一小時后”可知本句說的是未來的事，那么if引導(dǎo)

5、的條件狀語從句要用一般現(xiàn)在時表示將來時，主句要用一般將來時。答案：C誤區(qū)提醒 if 既可以引導(dǎo)條件狀語從句，表示“如果”，也可以引導(dǎo)賓語從句，表達“是否”。辨別它在這兩種從句中的時態(tài)是我們經(jīng)常容易出錯的地方。另外，if 和unless的用法也需注意。 典型例題： -I wonder if your wife to the party. -If your wife _, so will mine。. A. will go， go B. will go, goes C.goes, will go D. will go, will go 解析：第一句中if表示“是否”，引導(dǎo)賓語從句，用將來時will

6、 go；第二句“如果你的妻子去，我的妻子也去”，if引導(dǎo)條件狀語從句，用一般現(xiàn)在時表示將來時。 your wife，單三人稱主語，所以用goes 。答案：B一、If引導(dǎo)的條件句*引導(dǎo)條件狀語從句最常用的連詞是if。if引導(dǎo)的條件句有真實條件句和非真實條件句兩種（非真實條件句會在以后的虛擬語氣中闡述），其引導(dǎo)的真實條件狀語從句表示在某種條件下某事很可能發(fā)生。1、“if從句（一般現(xiàn)在時）+主句（一般現(xiàn)在時）”的條件句-表達真理或事實（動作必然發(fā)生）。 Ifyouheatice,itturnsintowater.如果你加熱冰，它就會變成水。 Ifyouputsugerintowater,itdisa

7、ppears.如果你把糖放進水里，它就會溶解。2、“if從句（一般現(xiàn)在時）+主句（一般將來時）”的條件句-談?wù)摽赡馨l(fā)生的事情。Ifitrainstomorrow,wellstayathome.如果明天下雨，我們會呆在家里。IfIdonthearfromhim,Iwontgo.如果沒接到他的通知，我不會去?！咀ⅰ窟@類條件句主句部分還可以用情態(tài)動詞，如ImaybuyacarifIpassthedrivingtest.如果通過駕駛考試，我可能會買一輛車。Ifyougotoanothercountry,youmustobeythelocallaws.如果你去另一個國家，就必須遵守當(dāng)?shù)氐姆伞?、有時i

8、f引導(dǎo)的條件句可以與“祈使句，and/or”相互轉(zhuǎn)換，Ifyoudonthurryup,youwillmissthebus.=Hurryup,oryouwillmissthebus.快點，否則你會錯過這趟車。Ifyouuseyourhead,youllfindaway.=Useyourhead,andyouwillfindaway.動動腦子的話，你就會想出辦法。二、unless引導(dǎo)的條件狀語從句unless意為“除非、如果不”，用來引導(dǎo)否定意義的條件句，等于“ifnot”Letsgooutforawalkunlessyouaretootired.=Ifyouarenottootied,lets

9、gooutforawalk.我們出去散步吧，除非是你太累。Unlessyoubrushyourteetheveryday,youwillgetatoothache.=Youwillgetatoothacheifyoudontbrushyourteetheveryday.如果不每天刷牙，你就會牙疼。用unless改寫句子1.Ifyouhaventlistenedcarefully,youwontknowhowtodotheexamquestions.2.IfIdontleavenow,Iwillbelate.3.Wewillgetlostifwedonthaveamap.4.Ifyoudontr

10、eturnyourbooktothelibrarytoday,youwillbefined.5.Iwillbuythatdressifsomeonehasntboughtitalready.用if或unless填空1._hewantstoseeme,youcantellhimtowait.2. _itsnowstomorrow,wellhaveadayortwooff.3.Wewontgotohisparty_heinvitesus.4.Sheissuretopasstheexam_sheisill.5._Imtired,Illhavearestfortea.6.Iwontbuythatbac

11、kpack_itcostslessthan100yuan.7. Iwilllendyouthemoney_youpaybackontime.8. Youwillfailtheexam_youstudyhard.9.Iwillbuyacomputer_Iamabletosaveenoughmoney.10. _youdropaglass,itbreaks.單選1.IfI_hisphonenumber,Iwilltellyou.A.findB.foundC.willfindD.havefound2.Wewillgocampingifit_tomorrow.A.WontrainB.didntrain

12、C.doesntrainD.isntraining3.Imwaitingformyfriend.Ifhe_,I_swimmingalone. A.doesntcome;willgoB.wontcome;willgo C.willcome;wontgoD.dontcome;willgo4._yougotothesupermarketat7p.m,youcanbuyalotofcheapfood.A.IfB.UnlessC.WhetherD.When5.Iwontgettothepartyontime_Icatchthefirsttraintomorrowmorning.A.IfB.UnlessC

13、.WhetherD.When6.-Shallwegoonapicnicthisweekend?-Goodidea!Unlessit_.A.rainsB.doesntrainC.rainD.wontrain7.-CanIchangethejacketforanotherone_itdoesntfitmewell?-Ofcourse.A.unlessB.ifC.thatD.though8.-ifIgetgoodgradesthistime,myparents_metoHongKongforafive-daytrip.A.takeB.takesC.tookD.willtake9.If everyon

14、e _ the traffic rules, the roads will be much safer (安全得多). A. obey B. obeys C. obeies D. obeying10.We mustnt cross the road if the light _ red. A. turning B. are C. turns D. isI.單項選擇1.If you _ to the party, youll have a great time. A. will go B. went C. go D. going2.It will be a long time _ peter _

15、 his work. a. since, has finished b. after, finishesc. when, will finish d. before, finishes.3. what will father _ us from Japan a. take b. bring c. carry d. make 5 I_ her the answer if she _me. a. can tell, will ask b. will tell, will ask c. would tell, ask d. will tell, asks6. what are you going t

16、o do tomorrow?-well go to the library tomorrow if it _. a. isnt rain b. rain c. wont rain d. doesnt rain7.Do you know when he will come back tomorrow?-sorry, I dont know. when he _ back, Ill tell you. a. comes b. will come c. come d. may come 8. what will you do if you _ to the old folks home visit?

17、a. go b. went c. going d. will go9. If I eat _ food, Ill be very fat.a. too many b. many too c. too much d. much too10.Ill give the book to him if he _ here next sunday.a. will come b. comes c. is coming d. came11. There _an English film in our school tomorrow.a. is going to have b. will have c. is going to be d. has12.Could you tell