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1、if條件句講解及練習(xí) 撰稿:胡秋明 審稿:趙克險 責(zé)編:白雪雁本單元語法講解一、will和begoingto表示推測、揣想 will更強(qiáng)調(diào)依據(jù)直覺、知識和經(jīng)驗(yàn)做出的推測。例如: Thiswillbethehouseyouarelookingfor. Youwillbeintimeifyouhurry. begoingto更強(qiáng)調(diào)依據(jù)當(dāng)時可以觀察到的證據(jù)、事實(shí)做出的推測。例如: Lookatthoseclouds.Ithinkitisgoingtorain. ---Watchout!Heisgoingtohitthatballagain. ---It'sgo
2、ingtobeaveryinterestingmovie.二、含if的真實(shí)條件句和虛擬條件句 ?。?)在英語中,語氣是動詞的一種形式,用來表示說話人的意圖或態(tài)度?! ∮⒄Z的語氣有三種:陳述語氣(表示所說的話是事實(shí)),祈使語氣(表示所說的話是請求或命令)和虛擬語氣(表示所說的話只是一種主觀的愿望或假設(shè)或建議等)。 如果所表示的條件是真實(shí)的,或者完全有可能實(shí)現(xiàn)的,叫真實(shí)條件句,主句和從句的謂語都用陳述語氣。如: Ifshedoesn’thurryup,shewillmissthefirstbus. 如果所表示的條件不可能實(shí)現(xiàn)或者實(shí)現(xiàn)的可能性很小時,叫非真實(shí)條件句,主句和從句的謂語要用虛擬語氣
3、?!木渲骶渑c現(xiàn)在事實(shí)相反過去式(be用were)would/should/could/might+do與過去事實(shí)相反過去完成式would/should/could/might+havedone與將來事實(shí)相反should(wereto)+動詞原形would/should/could/might+do IfIwereyou,Iwouldnotletoutthesecret. 如果我是你的話,我不會泄露這個秘密的?! fIknewhisnewaddress,Iwouldtellyou. 如果我知道他的新地址,我會告訴你的?! fhestudiedharder,hewouldpassthe
4、exam. 如果他學(xué)習(xí)再努力點(diǎn)的話,他會通過考試的?! fwehadmadefullerpreparation,weshouldhavewonthegame. 如果我們做了更充分的準(zhǔn)備的話,我們肯定就贏了這場比賽。 Ifyouhadtakenmyadvice,youwouldn’thavebeenlateforthemeeting. 如果你聽了我的建議,你開會就不會遲到了。 Ifshewereto/shouldcome,Iwouldtellherthesecret. 萬一她來的話,我會告訴她這個秘密?! 。?)省略if的虛擬條件句 在含有were,had,或者should等詞的
5、虛擬條件句中,可以省略if,將were,had或者should這些助動詞放在句首。如: WereIyou,Iwouldnotletoutthesecret. Hadwemadefullerpreparation,weshouldhavewonthegame. Hadyoutakenmyadvice,youwouldn’thavebeenlateforthemeeting. Shouldshecome,Iwouldtellherthesecret.高一語法練習(xí)(四)預(yù)測、if條件句及虛擬語氣 一、單項選擇 1.IfI_____wherehelived,I_____anotetohim
6、. A.know,wouldhavesent B.hadknown,wouldhavesent C.know,wouldsend D.knew,wouldhavesent 2.Maryisilltoday.Ifshe_____,she_____absentfromschool. A.werenotill;wouldn’tbe B.hadbeenill;wouldn’thavebeen C.hadbeenill;shouldhavebeen D.hadn’tbeenill;couldbe 3.Heactedasifhe_____everything
7、intheworld. A.knew B.knows C.hasknown D.won'tknow 4.Ifyouhadenoughmoney,what_____? A.willyoubuy B.wouldyoubuy C.wouldyouhavebought D.willyouhavebought 5.IfMr.Young_____withjustice