Unit6Sunshineforall第3课时Grammar（学生版）八年级英语下册讲义（牛津译林版）

Unit6Sunshineforall第3课时grammar八年级英语下册同步精品讲义（牛津译林版）知识精讲知识精讲1、Itis＋adj．＋toinfinitive（Itis＋形容词十动词不定式）Itis＋adj.＋for…＋toinfinitiveItis＋adj．＋toinfinitive（Itis＋形容词十动词不定式）“Itis＋形容词＋动词不定式”可以用来描述行为和情境。在该句型中，it是形式主语，真正的主语是后面的动词不定式。把真正的主语放在句末而用it作形式主语也是为了句子的协调，避免“头重脚轻”。该句型中的形容词是用来描述行为或情境的。如：Itisdangeroustoplayfootballinthestreet．在街上踢足球是危险的。Itishardtounderstandwhathesaid.要理解他的话是很难的。典型例题典型例题完成下列句子在下午五点钟之前完成这项工作是不可能的。___________________________________________________________.2)Itis＋adj.＋for…＋toinfinitive“Itis＋形容词＋for…＋动词不定式”可以用来具体说明正在谈论的事情。在该句型中，it是形式主语，for后面所引导的人或物是动词不定式的逻辑主语，forsb./sth.todosth.在英语中通常称为动词不定式的复合结构。其中的形容词用来说明不定式的特征，而不是说明人的特征或性格。用于该句型的常见形容词有：hard，difficult，easy，important,interesting,dangerous,possible,'impossible,meaningful,fortable,unfortable等。如：It'sdifficultforyoutopasstheexam.对你来说通过这次考试是困难的。典型例题典型例题他们有必要乘出租车。______________necessary______________totakeataxi.2.Itis＋adj．＋of…＋(not)todosth．（Itis＋形容词＋of…＋动词不定式）“Itis＋形容词＋of…＋动词不定式”结构用来对某人的品质、性格等作出评价，其中的形容词必须是表示人的品质、性格等的形容词。it是形式主语，没有实际意义。该结构中的sb.和(not)todosth.有着逻辑上的主谓关系，所以该句型又可以转换成“sb.＋be＋adj.＋(not)todosth.”。用于该句型的常见形容词有：careless，careful，clever,foolish,good,kind,nice,polite,impolite,rude,selfish,generous,wise,silly,modest,proud,thoughtful等。如：It'sveryniceofyoutogivemeagift.=Youareverynicetogivemeagift.你送给我礼物，你真好。Itissillyofyounottoforgiveothersfortheirmistakes.=Youaresillynottoforgiveothersfortheirmistakes.你不原谅别人的错误是愚蠢的。典型例题典型例题用of或for填空①It'simpossible_______youtofinishtheworkinsuchashorttime.②It'sselfish_______yourcousintoeatupthewholecake.3.donate...to...捐……给……【例句】donatemoneytocharities给慈善机构捐钱donatebloodtopeopleinneed给有需要的人献血典型例题典型例题你把这些衣服捐给希望工程真善良。___________________________________________________________.4.experience经验，经历【考点聚焦】表示经验时是不可数名词，表示经历时是可数名词。【例句】Thegreatestteacherisexperience.经验是最好的老师。PleasetellusyourexperiencesinAmerica.请你告诉我们你在美洲的经历。【拓展】experience还可以做动词用，意为“经历”如：Themoreyouexperience,themoreknowledgeyouwillget.典型例题典型例题Pleasetellmesomethingaboutyour_______（经历）inBeijing.5.havetrouble(in)doingsth.做某事有麻烦【例句】DoyouhavetroubleinlearningEnglish?你在英语上有困难吗?【拓展】havetrouble(in)doingsth.=havetroublewithsth.另外havetrouble(in)doingsth.结构中，trouble还可以换成“difficulty,problems”典型例题典型例题()Hehastrouble_______ittoyou.A.read B.reading C.toread D.toreading能力拓展能力拓展完成句子1．对于我们来说，出门戴口罩太重要了。________________forus________________amaskwhenwegoout.2．对于我们来说，依靠我们自己很重要。________veryimportantforus________________________ourselves.3．保护环境并不太难。It’snottoohardto___________theenvironment.4．拿别人开玩笑是不礼貌的。Itisimpolite________________________________others.5．和这些特殊的人们密切合作真是令人惊奇的经历。It’sanamazingexperienceto________________withthesespecialpeople.分层提分分层提分题组A能力提升练6．It’snoteasyforme________friends.A．make B．tomake C．makes D．made7．—Alex,areyougettingonwellwithyournewneighbor?—No,heisalwaysgivingmealotof________.A．success B．spirit C．trouble D．training8．Itisimpossible_________howlargetheuniverseis.A．toimagine B．imagining C．imagine D．imagined9．Hiswordsmade________possibleforme________inthecity.A．it；towork B．it；toworking C．that；towork10．Itiscareless______youtoloseyourmobilephoneagain.Ithinkitnecessary______youtobemorecarefulnexttime.A．of;of B．of;for C．for;for D．for;of11．—Itiscareless______youtoloseyourworkbookagain.—Sorry,mom.Ithinkit’snecessary______metobemorecarefulnexttime.A．of;of B．of;for C．for;for D．for;of12．—Tom,yourmobilephoneisringing.—Waitaminute.It’sdangerous________us________itwhiledriving.A．for,answering B．of,toanswer C．for,toanswer D．of,answering13．It’simportant________thegovernment________basiceducationforchildreninpoorareas.A．of;toprovide B．of;provide C．for;toprovide D．for;toproviding14．Ithink________necessaryforyou________breakfast.A．this;have B．it’s;tohave C．it’s;have15．It’sgood________yourhealth________.A．for,todrinkmilk B．for,drinkmilk C．of,drinkmilk D．of,todrinkmilk16．________isagoodhabit________ustoeatanappleeveryday.A．It,for B．That,for C．This,of D．It,of17．Itisveryimportant________us________Englishwell.A．for;learn B．of;learn C．for;tolearn18．It’sgood________by________theInternet,butdon’tspendtoomuchtimeonit.A．relax;using B．torelax;using C．relax;touse D．torelax;touse19．—It’skind________himtohelpmewithmystudy.—Yes,heisalwayskind________everyone.A．for,of B．of,to C．to,of D．to,to20．________isimportant________ustodomorningexerciseseveryday.A．That;for B．It;for C．This;for D．It;of题组B培优拔尖练21．It’s________forteenagerstolearnhowtodocookingbecauseit’shelpful.A．impossible B．normal C．necessary D．meaningless22．Lookout!Thetrafficismovingfast.Itis________dangerous________crossthestreet.A．very,to B．so,that C．much,to D．too,to23．It’sstrange________Mary_____suchadecision.A．for;making B．for;tomake C．of;make D．of;tomake24．It’s_________thatweshouldaskforheradvice.A．necessary B．popular C．kind D．hard25．Itisveryimportant________theworkontime.A．fini