as-if用法.ppt

如果asif+主＋系+表语”结构，省略主语和系动词，这样asif+名词、不定式、形容词（、介词短语或分词。Heactsasif（hewas）afool．他做事像个傻子。Tomraisedhishandsasif（hewasgoing）tosaysomething．汤姆举起手好像要说什么。Shelefttheroomhurriedlyasif（shewas）angry．1．在look,seem等系动词后引导表语从句。如：Shelooksasifsheweretenyearsyounger．她看起来好像年轻了十岁。2．引导方式状语从句。Shelovestheboyasifshewerehismother．asif+陈述语气的情况。所述的是真实的或极有可能发生或存在的事实。ItsoundsasifitisrainingHetalksasifheisdrunk．听起来像是在下雨。asif从句用虚拟语气的情况。1）与现在事实相反，动词一般过去时。Youlookasifyoudidn’tcare．你看上去好像并不在乎。Hetalksasifheknewwhereshewas。（2）与过去相反，谓语动词用过去完成时。HetalksaboutRomeasifhehadbeentherebefore．他说起罗马来好像他以前去过罗马似的。（3）与将来相反，谓语动词用“would／could／might＋动词原形”。Heopenedhismouthasifhewouldsaysomething．他张开嘴好像要说什么。Itlooksasifitmightsnow．看来好像要下雪了。hurt通常指肉体，心灵，感情上的伤害或疼痛。Vt/viHefellandhurthisarm.他跌了一跤，摔坏了胳膊。..Hiswordshurtme.他的话伤了我。Doesyourlegstillhurt?injure在事故中的受伤，名词为injuryHewasinjuredinatrafficaccident.Wound.战争中受伤Shewasbadlywoundedinthebattle.他在战争中受了严重的的伤。inruins成为废墟fallinto/comeintoruins.成为废墟Theoldcityisnowinruins.这座古城现在是一片废墟。“therest+of+分数/%+of+名词”等,的名词.如:50%ofthestudentsinourclassaregirls.20%ofthewaterispolluted.（污染）Mostoftheappleswererotten.大部分的苹果都是烂的.Mostoftheapplewaseatenbyarat.这个苹果的大部分被老鼠吃了.shocked(人）惊讶的，震惊的，Shocking(物）令人震惊的。Iwasshockedat/bytheshockingnews.trapN.陷阱vt,困住某人。Shewastrappedintheruins.notall/every/…+名词=all…名词+not;somebutnotall部分否定，（不全是）Notalltheteachersteachsuccessfully.(写出同义句)________theteachers_______teachsucessfully.2)Allofthemarenotright.=Notallofthemareright.(写出全部否定句)___________________________________________________如果表示全部否定，要分别用/nothing/none,noone/neither/nobody表示Nobodyishere.