Unit4知识点人教版英语八年级下册

U4知识点用英语提建议的八个句型1.用Shallwe...?在表示建议或征求对方意见时，可用以Shall开头的一般疑问句。其肯定回答一般可用：Allright,OK,Goodidea等。2.用Let's...?表示“让我们”（包括双方在内）做某事“这一建议时要用以Let's开头的祈使句。而Letus在表示让我们做某事时，不包括对方在内。如：Let'sgoandseethepandas.Letusgo,willyou?让我们去吧，好吗？3.用Whynot...?Whynot...?意思是：为什么不……？后接不带to的不定式（即动词原形）。Whynot...?是省略了主语的省略形式，完整句Whydon'tyou/they/we...?如：Whydon'tyougowithme?Whydon'tyoutryagain?=Whynottryagain?4.用Whatabout...?意为“……怎么”后可接名词、的代词和动名词。如：Whataboutgoingoutforawalk?I'mgoingtothepark.Whataboutyou?5.用hadbetter意为“最好”，“还是……好”，常用于口语，后接动词原形。如：Youhadbetterstayathome.You'dbettergonow.6.用Don't...来表示建议，通常用于祈使句的否定形式中。如：Don'tplayinthestreet.Don'tthrowitlikethat.7.Wouldyoulike+短语？这个句型意思是“……怎么样？”后接sth.或todosth.如：Wouldyoulikeanothercupoftea?Wouldyoulikesomecolourpencils?8.Willyouplease+动词原形……？它的意思是“请你……好吗？”如：Willyoupleasecometomorrow?Willyoupleasepickitup?重点语法一、although引导的让步状语从句【典例探究】①Althoughheenteredthecontestjustforfun,hewonfirstprize.尽管他参加比赛只是为了好玩，但却赢得了头奖。②Theboyworkedouttheproblemalthoughitwasratherdifficult.虽然问题相当难，但是男孩还是解答出了。【名师点拨】although意思是“尽管，虽然”，用来引导让步状语从句，在一般情况下可以和though互换，但though比较口语化，而although较为正式，另外although的语气比though重。当although/though引导的从句放在句首时，主从句之间要用逗号隔开。注意：although和though都不能和but在一个句子里连用。语法学习★although引导的让步状语从句【典例探究】①AlthoughIgavehimsomeadvice,hedidn’ttakethem.虽然我给了他一些建议,但他没有采纳。②Althoughit’sraining,theyarestillworkinginthefield.虽然在下雨,但他们仍在地里干活。③Thoughhetriedhard,hewasnotsuccessful.虽然他尽力而为,但他没有成功。④Although/Thoughhewastired,hekeptonworking.虽然他已经累了,但仍然继续工作。【名师点拨】although的意思是"尽管,虽然",用来引导让步状语从句,在一般情况下可以和though互换,但though比较口语化,而although较为正式,另外although的语气比though重。当although/though引导的从句放在句首时,主从句之间要用逗号隔开。注意:although和though都不能和but在一个句子里连用。【互动平台】单项选择。1.______sheisyoung,sheknowsquitealot.A.WhenB.HoweverC.AlthoughD.Unless2.Hewentoutwithoutanovercoat____itwassocold.A.althoughB.soC.ifD.For3.Pleasespeakloudly______Icanhearyouclearly.A.althoughB.unlessC.sothatD.butKey:1-3CAC★sothat引导的目的状语从句【典例探究】①Hegotupearlythismorningsothathecouldcatchtheearlybus.今天早上他起床早,以便能赶上早班车。②Hegotupsoearlythismorningthathecaughttheearlybus.今天早上他起得非常早,这样就赶上了早班车。【名师点拨】sothat用来引导目的状语从句,意思为"以便,为了",从句中常用can(could),will(would),may(might)等情态动词,如例①。so...that...用来引导结果状语从句,如例②。【互动平台】翻译下面的句子。1.他跑得很快,我们跟不上他。______________________________2.我们把灯打开,以便看看它是什么。______________________________Key:1.Heransoquicklythatwecouldn’tcatchupwithhim.2.Weturnedonthelightsothatwemightseewhatitwas.三、sothat引导的目的状语从句【典例探究】①Hegotupearlythismorningsothathecouldcatchtheearlybus.今天早上他起床早，以便能赶上早班车。②Hegotupsoearlythismorningthathecaughttheearlybus.今天早上他起得非常早，这样就赶上了早班车。【名师点拨】sothat用来引导目的状语从句，意思为“以便，为了”，从句中常用can(could),will(would),may(might)等情态动词，如句①。so...that...用来引导结果状语从句，如句②。12．UNICEFbelievesthatallchildrenshouldhavecleanwaterandfoodsothattheycanbehealthy.联合国儿童基金会认为，所有的孩子都应该食用干净的水和食物，这样才能保持健康。■此句中sothat常用来引导目的状语从句，意思是“以便；为了”。如：Theteachermustspeakclearlysothatthestudentscanunderstandwell.教师说话应该清楚，以便学生能听懂。■目的状语从句一般表示尚未完成的目的或意图，因此句中常用情态动词may/might,can/could,should,would等。如：Sheworkedhardsothateverythingwouldbereadyintime.她努力工作，为的是及时做好各项准备。Theyadvertisedtheconcertsothateveryoneshouldknowaboutit.为了使每个人都知道这次音乐会，他们登了广告。【中考链接】1.—Whatdoyouthinkofherdress?—Ithinkitstilllooksquitefashionableonher_____itisastyleofmanyyearsago.(09年扬州)A.thoughB.orC.soD.because2.—DidyoureturnHelen’scall?—Ididn’tneedto____I’llseehertomorrow.(09年苏州)A.though B.unlessC.when D.because3.—IhearJayChouwillcometoXiamen.—Really?____hecomes,IwillbeveryhappybecauseI’mabigfanofhim.（08年厦门）A.If B.Until C.Unless【互动平台】翻译下面的句子。1.尽管他很忙，但是他还是经常帮我学英语。Althoughheisverybusy,heoftenhelpsmelearnEnglish.2.如果明天不下雨，我们就去划船。Ifitdoesraintomorrow,we’llgoboating.3.我们把灯打开，以便看看它是什么。Weturnedonthelightsothatwecouldseewhatitis.although,sothat,until练习Ⅰ.单项选择1.I________homeuntilIfinishmyhomework.A.won’tgoB.willgoC.goD.went2.Don’tgetoff_________thebusstops.A.whenB.afterC.untilD.aslongas3.Itiseasytogetthesoftwareweneed_______themarketissmall.A.asifB.sothatC.althoughD.until4.Theboy________tobed________hismothercamein.A.wentnot;untilB.didn’tgo;afterC.went;untilD.didn’tgo;until5.Iwon’tbelieveyou_______Ihaveseenitwithmyowneyes.A.ifB.untilC.afterD.when6.Theydidn’tstartthework_________theirteachercameback.A.untilB.whileC.assoonasD.if7._______therewereonlyfivesoldiersleftatthefront,________theywentonfighting.A.Because;soB.If;andC.Though;butD.Though;/8.______sheisveryold,_______shecanstillworkeighthoursaday.A.Because;soB.Though;butC.As;yetD.Though;yet9.Pleaseanswerthequestioninaloudenoughvoice_______alltheclassmayhear.A.sothatB.orC.inordertoD.and10.Liftitup______Imayseeit.A.thoughB.sothatC.asD.than11.Ihurried_______Iwouldn’tbelateforclass.A.soB.sothatC.ifD.unless12.Weshouldgobybus_______wecangetthereearlier.A.assoonasB.whereC.inorderthatD.asⅡ.句型转换Thegirlisyoung,butshecanspeakfivelanguages.（同义句）_______thegirlisyoung,shecanspeakfivelanguages.Wewenttothecinemaearlyyesterdayinorderthatwecouldfindgoodseats.（同义句）Wewenttothecinemaearlyyesterday_________________wecouldfindgoodseats.I’llwaituntilhecomesback.（同义句）I___________________untilhecomes