八年级英语上册1—2单元必考知识点汇总

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八年级英语上册1—2单元必考知识点汇总Unit1Wheredidyougoonvacation?【重点语法】不定代词:不指名代替任何特定名词或形容词的代词叫做不定代词。用法注意:1.some和any+可数名/不可数名。some多用于肯定句,any多用于否定句、疑问句和条件从句。有些问句中用some,不用any,问话者希望得到对方肯定回答。2.由some,any,no,every与body,one,thing构成的复合不定代词作主语时,其谓语动词用三单。3.不定代词若有定语修饰,该定语要置于其后:如:somethinginteresting【重点短语】1.buysthforab./buysb.sth为某人买某物2.taste+adj.尝起来……3.nothing...but+V.(原形)除了……之外什么都没有4.seem+(tobe)+adj看起来5.arrivein+大地方/arriveat+小地方到达某地6.decidetodosth.决定做某事7.trydoingsth.尝试做某事/trytodosth.尽力做某事8.enjoydoingsth.喜欢做某事9.wanttodosth.想去做某事10.startdoingsth.开始做某事=begindoingsth.11.stopdoingsth.停止做某事区分:stoptodosth.停下来去做某事12.dislikedoingsth.不喜欢做某事14.so+adj+that+从句如此……以至于……16.tellsb.(not)todosth.告诉某人(不要)做某事17.keepdoingsth.继续做某事18.forgettodosth.忘记去做某事/forgetdoingsth忘记做过某事【词语辨析】1.takeaphoto/takephotos拍照quiteafew+名词复数“许多…”2.seem+形容词看起来…...Youseemhappytoday.seem+todosth.似乎/好像做某事IseemtohaveacoldItseems+从句似乎..….Itseemsthatnoonebelieveyou.seemlike...好像,似乎…..Itseemslikeagoodidea.3.arrivein+大地点=getto=reach+地点名“到达......”arriveat+小地点(注:若后跟地点副词here/there/home,介词需省略,如:arrivehere;gethome)4.feellikesth感觉像…feeldoingsth.想要做某事5.wonder(想知道)+疑问词(who,what,why)引导的从句。6.becauseof+名/代/V-ingbecause+从句Hecan’ttakeawalkbecauseoftherain.Idon’tbuytheshirtbecauseitwastooexpensive.7.enough+名词足够的…...形容词/副词+enoughUnit2Howoftendoyouexercise?【重点语法】1.频率副词:always,usually,often,sometimes,never频率副词在句中通常放在实义动词之前,be动词或助动词之后。常用于一般现在时态中。2.“次数”的表达方法一次once,两次twice,三次或三次以上:基数词+times,如:threetimes,fivetimes,3.howoften“多久一次”问频率,回答常含有频率词组或短语。常见的how疑问词:1)Howsoon多久(以后)—Howsoonwillhebeback?他多久能回来?—Hewillbebackinamonth.他一个月后能回来。2)howlong“多久”—Howlongdidittakeyoutocleanthehouse?你打扫房子用了多久?—Ittookmehalfanhourtocleanthehouse.我打扫这房子用了半小时。3)Howmany+名复Howmuch+不可名“多少”问数量(howmuch还可问价格)【重点短语】1.gotothemovies去看电影2.lookafter=takecareof照顾3.surftheinternet上网4.healthylifestyle健康的生活方式5.goskateboarding去划板6.keephealthy=stayhealthy保持健康7.eatinghabits饮食习惯8.takemoreexercise做更多的运动9.thesameas与什么相同10.bedifferentfrom不同11.onceamonth一月一次12.twiceaweek一周两次13.makeadifferenceto对......有影响/作用14.mostofthestudents=moststudents15.shop=goshopping=dosomeshopping购物16.begoodfor对......有益17.bebadfor对......有害18.comehomefromschool放学回家19.ofcourse=certainly=sure当然20.getgoodgrades取得好成绩21.keep/beingoodhealth保持健康22.takeavacation去度假【词语辨析】1.maybe/maybemaybe是副词,意为“大概,可能,或许”,一般用于句首。Maybe是情态动词,意为“可能是...,也许是...,大概是...”.Thebabyiscrying.Maybesheishungry.Thewomanmaybeateacher.2.afew/few/alittle/littlePeoplecanliveto100,butfewpeoplecanliveto150.Thereislittletimeleft.Iwon’tcatchthefirstbus.Couldyougivemealittlemilk?3.hard/hardlyhard作形容词,意为“困难的,艰苦的,硬的”;作副词,意为“努力地,猛烈地”。hardly为副词,意为“几乎不”。Thegroundistoohardtodig.Icanhardlyunderstandthem.It’sraininghard.Thepeoplecanhardlygooutside.4.Asforhomework,moststudentsdohomeworkeveryday.asfor...意思是“至于;关于”,+名词、代词或动词的-ing形式(即动名词)。如:Asforhim,Ineverwanttoseehimhere.至于他,我永远不希望在这里见到。Asforthestory,you'dbetternotbelieveit.关于那故事,你最好不要相信。5.Thatsoundsinteresting.这是“主语+系动词+表语”结构的简单句。sound(听起来),look(看起来),smell(闻起来),taste(尝起来),feel(觉得),seem(好象),grow(变得),get(变得)等词在英语中可用作系动词,后跟形容词作表语。如:Ittastesgood.这味道好。Themusicsoundsverysweet.这音乐听起来很入耳。Thesmokegrewheavierandheavier.烟雾变得越来越浓了。6.percent名词,意为“百分之……”百分数的表示方法:基数+percent(不用复数形式),percent做主语时,谓语动词的数要根据其后面的名词来确定。50%:fiftypercent百分之五十Fiftypercentoftheapplesarebad.50%的苹果都坏了。Twentypercentofthemeatisinthefridge.20%的肉都在冰箱7.not…atall意为“一点也不”,not应放在be动词、情态动词或助动词之后。Thestoryisn’tinterestingatall.那个故事一点也没有趣。8.Itis+adj.todosth.做某事是……的。Itisinterestingtoplaycomputergames.玩电脑很有趣。9.take,spend,payIttakessb.sometimetodosth.意为“花费某人……时间来做某事”。人(sb.)spend时间/钱onsth.“买某物花了……钱”。人(sb.)spend时间/钱(in)doing“花费多少时间来做某事”。pay的主语必须是人,而“花钱买某物”为pay...for...10.however副词,意为“然而,可是”,表示转折关系,可放在句首、句中、句末。

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