原因時(shí)間條件狀語(yǔ)從句期中復(fù)習(xí)課件八年級(jí)英語(yǔ)下冊(cè)

期中復(fù)習(xí)從句語(yǔ)法專項(xiàng)八年級(jí)2024時(shí)間狀語(yǔ)原因狀語(yǔ)目的狀語(yǔ)地點(diǎn)狀語(yǔ)比較狀語(yǔ)結(jié)果狀語(yǔ)條件狀語(yǔ)讓步狀語(yǔ)方式狀語(yǔ)狀語(yǔ)從句Grammar條件狀語(yǔ)從句原因狀語(yǔ)從句時(shí)間狀語(yǔ)從句原因狀語(yǔ)從句原因狀語(yǔ)從句什么是狀語(yǔ)？狀語(yǔ)用中文對(duì)標(biāo)，“地”，他的語(yǔ)義功能是描述一件事情發(fā)生的狀態(tài)，比如在什么時(shí)間，在什么地方，因?yàn)槭裁丛颍瑸榱耸裁茨康?，通過(guò)什么方式等等。引導(dǎo)詞？becausesinceasforbecause

because除用于回答由why引導(dǎo)的疑問(wèn)句外，還可以用來(lái)引導(dǎo)原因狀語(yǔ)從句。because位置e.g.Wedidn’thaveagoodtimelastSundaybecausetheweatherwassobad.Benpassedtheexam

because

heworkedhard.

Because

Benworkedhard,hepassedtheexam.主句之后主句之后主句之前because引導(dǎo)的原因狀語(yǔ)從句because和so不能同在一個(gè)句子中。BecauseIwasafraid,Ididn’tgothere.BecauseIwasafraid,soIdidn’tgothere.但二者連接的句子可以相互轉(zhuǎn)換。e.g.Iwashungry,soImademyselfasandwich.=BecauseI’mhungry,Imademyselfasandwich.becauseandbecauseofbecause和becauseof也有明顯區(qū)別。because后面要跟從句，而becauseof后面跟名詞短語(yǔ)。Heislateforschoolbecauseitrainsheavily.Heislateforschoolbecauseoftheheavyrain.拓展知識(shí)連接詞語(yǔ)氣位置（主句前/后）意義because最強(qiáng)前或后“原因”；表客觀因果關(guān)系。as較強(qiáng)前“由于”；把眾人所知的事實(shí)當(dāng)作理由。since較弱前“既然”；就對(duì)方陳述的事實(shí)作為理由。for次弱后“理由”；對(duì)某一事實(shí)進(jìn)行推斷的理由。Exercise我不能幫助你，因?yàn)槲液苊Α?/p>

2)杰克昨天沒(méi)去看演唱會(huì)，因?yàn)樗×恕?/p>

3)因?yàn)樘鞖夂芾湮抑缓么诩依铩?/p>

Ican’thelpyoubecauseI’mverybusy.Jackdidn’tgototheconcertyesterdaybecausehewasill.Becauseitisverycold,Ihavetostayathome.時(shí)間狀語(yǔ)從句時(shí)間狀語(yǔ)從句引導(dǎo)詞？whenwhileasbeforeafter…till/untilassoonas時(shí)間狀語(yǔ)從句是表達(dá)事件發(fā)生時(shí)間概念的重要的手段。

主句（bedoing）+從句（while+bedoing）=從句（While+bedoing）,主句（bedoing）

主句（bedoing）+從句（when+did）=從句（When+did）主句（be+doing）

when/while“當(dāng)......時(shí)候

when表示主句的動(dòng)作和從句的動(dòng)作同時(shí)或先后發(fā)生謂語(yǔ)動(dòng)詞可以是延續(xù)性動(dòng)詞，也可以是短暫性動(dòng)詞所以可以跟進(jìn)行時(shí)態(tài)，也可以跟一般時(shí)態(tài)，常用一般過(guò)去時(shí)態(tài)。while表示主句的動(dòng)作和從句的動(dòng)作同時(shí)發(fā)生謂語(yǔ)動(dòng)詞必須是延續(xù)性動(dòng)詞所以常跟進(jìn)行時(shí)態(tài)when“當(dāng)......時(shí)候,正在此時(shí)”，它既可指一個(gè)時(shí)間點(diǎn)，又可指一個(gè)時(shí)間段（1）意為“當(dāng)......時(shí)候，和......同時(shí)”（2）也可以作為名詞來(lái)使用，表示“一段時(shí)間，一會(huì)兒”eg.forawhile,afterawhile（3）表示對(duì)比，意為“然而“。

短暫性動(dòng)詞：指不能延續(xù)的動(dòng)作，這種動(dòng)作發(fā)生后便立即結(jié)束。（常用when，不用while）延續(xù)性動(dòng)詞：表示能夠延續(xù)的動(dòng)作，這種動(dòng)作可以延續(xù)下去或產(chǎn)生持久影響。（when和while可以替換使用）如：knock,ring,open,close,begin,come,go,buy,borrow,lend,finish等如：learn,work,read,walk,sing,wait,live等2.before/after(4)before在...之前Youneedtogetoutofherebeforemymothercomeback.(5)after在...之后Iarrivedafterheleft.我在他離開之后到達(dá)。3.till/until用法

till（不用于句首）

和until“直到”

*not…until直到…才…I'llstayhereuntilyoucomeback.我會(huì)待在這里，直到你回來(lái)。Hedidn'tgotobeduntilhefinishedhishomework.他直到做完作業(yè)才睡覺(jué)。（7）as?soon?as一……就……

用來(lái)表示主從句的動(dòng)作是緊接著發(fā)生的IwillcallyouassoonasIarriveinShanghai.我一到上海就給你打電話。例：—WillyoupleasegivethedictionarytoJane？—Sure.I'llgiveittoher__________shearriveshere.AbeforeBuntilCbecauseDassoonas4.assoonas

3read/comeinwatch/ringwrite/knockatKangkangwaswatchingTVwhenthetelephonerang.KangkangandJanewerewritingwhenMichaelknockedatthedoor.Example:DarrenwasreadingwhenMichaelcamein.whenwhile后面動(dòng)詞都用進(jìn)行時(shí)haveaclass/climbrun/swimdance/singMariawasswimmingwhile(when)Janewasrunning.Michaelwassingingwhile(when)

Mariawasdancing.

3Example:DarrenwashavingaclasswhileMichaelwasclimbingamountain.when/whileIwascooking______someoneknockedatthedoor.A．a(chǎn)ssoonasB．whenC．untilBAwasdoingsthwhenBdidsth.AwasdoingsthwhileBwasdoingsth.when/whileAwasdoingsthwhenBdidsth.AwasdoingsthwhileBwasdoingsth.Jim'smotherwascookingwhilehe______hishomework．A．did B．wasdoing C．isdoing

Bwhen(22廈門二檢)when__________________________________________Theboywasdoinghishomework

whenthemothercamein.while(22福州二檢)while__________________________________________Themotherwascooking

whilehersonwasdoinghishomework.1.Jack

camein

____

weweredoingourhomework.A.whileB.although

C.untilD.where2.I’dliketostudylawatuniversity

____mycousinprefershistory.whenB.whileC.forD.whether3.Themanagerwaswaitingatthegate____

theguestsarrived.A.

while

B.when

C.unless

D.after4.Iwasdoingmyhomework_________hewaswatchingTV.A.

while

B.when

C.unless

D.afterABBAExerciseAdverbialClausesofTime________youwereenjoyingyourtrip,Iwasbusypreparingformyexams.I’dlikeyoutomeethimwithme________hearrives.WouldyouhelpmemakeaplantoexploreBeijing_________hecomes?_______theywereexploringhappily,moreandmorepeoplecametothesquare.Hedidn’traisehishead________someonecalledhim._____________thethreeboyssaweachother,theyalljumpedaroundhappily.WhilewhenbeforeAsuntilAssoonasGrammar條件狀語(yǔ)從句條件狀語(yǔ)從句定義：由引導(dǎo)詞if引導(dǎo)的狀語(yǔ)從句叫做條件狀語(yǔ)從句，指在某種條件下會(huì)發(fā)生的事情。

IfImissthebus,Iwillbelateforschool.主句If如何區(qū)分主從句：1.找連接詞2.連接詞引導(dǎo)的句子為從句，反之為主句。復(fù)合句從句連接詞If：如果

If引導(dǎo)的條件狀語(yǔ)從句weshouldhavelightsorwearlight-coloredclothes.Ifwerideatnight,從句主句If引導(dǎo)的條件狀語(yǔ)從句Ifpeopleobeythetrafficrules

,therewillbefeweraccidents.從句主句1.

如果他努力學(xué)習(xí)，他將會(huì)通過(guò)考試。

Ifhe________hard,

he____________passtheexam.

studieswillpass2.

主句用_____________，從句用____________，用來(lái)描述將來(lái)的情況。一般將來(lái)時(shí)一般現(xiàn)在時(shí)口訣：主將從現(xiàn)1.

如果交通燈是紅燈，我們不準(zhǔn)橫穿公路。

Ifthetrafficlights_____red,we________crosstheroad.

aremustn't2.

主句用_____________，從句用____________，用來(lái)描述將來(lái)的情況。情態(tài)動(dòng)詞一般現(xiàn)在時(shí)口訣：主情從現(xiàn)1.

如果你到達(dá)那兒，記住打電話給我們。

Ifyou_____there，___________________tocallus.

getrememberto2.

主句用_____________，從句用____________，用來(lái)描述將來(lái)的情況。祈使句一般現(xiàn)在時(shí)口訣：主祈從現(xiàn)

1.-We’llgotothelibrarytomorrowifit____.

A.isn’train B.won’train C.doesn’train2.Becareful,______youwillhurtyourself.A.and B.orC.because Practice3.Ifshe____me,I____hertheanswer