Unit5Amazingthings重要知识点梳理:1.Theyturnedaroundbutsawnothing.她们转过身去,可什么也没看到。turnaround转身Jimturnedaroundandsawhisparentsstandingbehindhim.吉姆转过身去,发现他的父母在他的身后。nothing表否定意义的不定代词,意为“没什么”Nothingisdifficultforyou,ifyoutryyourbest.(作主语)Ihavenothing,soIdon’twanttogowithyou.我一无所有,因此我不想与你一起去。(作宾语)Hecanfindnothingwronginyourcomposition.他在你的作文中找不出任何错误。(形容词wrong修饰不定代词nothing时置于其后)2.frightened与afraid的区别frightened可用作表语,也可用作定语。用作定语时,意为“受惊的”。Millieisfrightenedofsnakes.米莉怕蛇。afraid通常只做表语,不做定语。固定搭配:beafraidofDon’tbeafraidofdogs.不要怕狗。3.Whathappened?发生什么事了?happenvi发生Whathappenedtoher?她发生了什么事?happentodosth.碰巧做某事Ihappentomeetmyoldfriendsinthestreet.我碰巧在街上遇见我的老朋友。辨析:happen与takeplace前者是碰巧发生,带有偶然性;后者指经过安排的发生。Ihappenedtobethere.我碰巧在那儿。Whenwilltheweddingtakeplace?婚礼什么时候举行?4.Hesearchedthebushes.他搜索了灌木丛。search,find和lookfor的区别search强调动作的过程,侧重指“(仔细)搜查,搜寻,搜索”Thepolicesearchedeveryroominthebuilding.警察搜查了楼里的每个房间。find强调动作的结果,侧重指“找到,发现”Simonsearchedcarefullybuthefoundnothinginthebushes.西蒙在灌木丛中找的很仔细,但什么也没发现。lookfor强调动作的过程,侧重指“找,寻找”MillieislookingforSimon.米莉正在找西蒙。5.ago与beforeago用于一般过去时,其前往往是一段时间。Isawthemtwodaysago.before可用于多种时态Makeaphonecalltomebefore7:00.ago不可单独使用,须与一段时间连用,但before可以单独使用作状语。Ireadthestoryinanotherbookbefore.我以前在另外一本书中看到过这个故事。Italkedtomyparentsaboutittwodaysago.我两天前跟我父母谈过此事。6.spend,cost,take,pay的辨析spend与payspend+时间/金钱onsthHespentmuchmoneyonclothes.他在穿衣上花了很多钱。spend+时间/金钱(in)doingsthIspentmuchtimereading.payfor为......付款Letmepayforit.让我们来付吧。cost与takecost的主语是sthIttakes…todo…Thepencostmetenyuan.这支钢笔花了我10元钱。Ittookme2hourstofinishdoingmyhomeworkyesterday.昨天夜里我花了两个小时完成作业。7.few,little,afew,alittle的用法区别few+可数名词,(a)little+不可数名词;afew/alittle为肯定含义,few/little为否定含义,意为“没多少”即时练习:书上有一些苹果。______________________________________________瓶子里没有水。________________________________________________8.without的用法(表否定)没有,无,不需。Theletterwaspostedwithoutastamp.那封信没贴邮票就寄出去了。Wegottherewithoutanytrouble.我们到达那儿,一路上没遇到麻烦。用在no,not,never等否定副词之后(强调肯定)没有…不,没有…则不能…Youcan’tgetrichwithouttakingrisks.人不冒险不富。(与-ing形式连用)不,无,没。Sheenteredtheroomwithoutknocking.她没敲门就进了房间。(表条件)若无,若非。Withoutwater,wecan’tlive.没有水,我们就不能生存。9.nolonger,notanylonger,nomore,notanymore的用法区别nolonger=notanylonger;nomore=notanymoreHeisnolonger/nomoreachild.=Heisnotachildanylonger/more.他不再是一个小孩。10.atleast的用法atleastadv.至少,无论如何,反正Shewasatleastthatmuchshorterthanme.她至少比我矮那么多。11.as…as…的基本用法Heisasstrongasahorse.他跟马一样壮。aslongas意思是“长达…之久;只要…“Itookusaslongasthreeyearstocarryouttheplan.as…aspossible意思是“尽可能…“Pleasereplymeassoonaspossible.请尽快回复。Shelooksasprettyasbefore.aswellas意思是“也;像…一样“Shecooksaswellashermotherdoes.她做饭像她母亲一样好。12.listen,hear,sound的辨析listen“听”,强调的是动作hear“听见”,强调的是结果sound“听起来”,是连系动词,后接形容词without的用法即时练习:Sandy,pleasetomecarefully.Ican’tyourwords.Themusicwonderful.13.remember意思是“记得、想起、回忆起”反义词是“forget”remember+doing记得做过某事我记得曾告诉过你关于她的事。____________________________________________remember+todo记得去做某事你走的时候,记住把灯关掉。______________________________________________14.tellsb.todosth.叫某人干某事tellsb.nottodosth.叫某人不干某事老师叫我们吃健康的食物。_________________________________________________警察叫那个男孩不要在街上玩。_____________________________________________15.keepondoingsth.意为“持续做某事”,与goondoingsth.同义他们一直等了我们两个小时。_______________________________________________