until狀語(yǔ)從句市公開(kāi)課一等獎(jiǎng)省賽課微課金獎(jiǎng)?wù)n件

till/until引導(dǎo)時(shí)間狀語(yǔ)從句1.必定句：…till/until…直到…表某動(dòng)作一直連續(xù)到某時(shí)間才停頓（主句謂語(yǔ)動(dòng)詞時(shí)延續(xù)性動(dòng)詞）eg:Ihavetostayhereuntiltherainstops.IwatchedTVuntilmymotherreturnedlastnight.1/232.否定句not…until…直到…才…(not能夠用表示否定意義詞代替，比如never,nothing,seldom等)表示某動(dòng)作一直連續(xù)到某時(shí)間才開(kāi)始（主句謂語(yǔ)動(dòng)詞是非延續(xù)動(dòng)詞）eg：Hewon’tgotobedtill/untilshereturns.

TomknewnothingaboutituntillhisItoldhim.

2/23注意1.till不能夠置于句首，until能夠eg:UntiltheclassisoverIreadthebook.2.notuntil在句子開(kāi)頭時(shí)要用倒裝NotuntilyoutoldmedidIknowthetruth.3/232.Iwillnotgoout___Ifinishmyhomework.A.untilB.whileC.sinceD.but4/233.I’llwait___shecomesout.A.whetherB.afterC.thoughD.until5/23if和unless引導(dǎo)

條件狀語(yǔ)句6/23真題1.Tomknewnothingaboutit___hissistertoldhim.sinceB.ifC.until(湖南中考）7/23?？紶钫Z(yǔ)從句主要是，

1.when,while,as,until,notuntil等引導(dǎo)時(shí)間狀從

2.so,that,so（…）that,such（…）that等引導(dǎo)結(jié)果狀從

3.if，unless等引導(dǎo)條件狀從8/23由if引導(dǎo)條件狀語(yǔ)從句，if意為“假如”,表示在某條件下，某事就很可能發(fā)生。

。Ifitstopssnowing，wecangoout.假如雪停了，我們就能夠出去。

Ifitsnowstomorrow,wewillbuildasnowman.假如明天下雪，我們將去堆雪人。9/23If引導(dǎo)條件狀從時(shí)態(tài)1.從句用普通現(xiàn)在時(shí)，主句是普通未來(lái)時(shí)主將從現(xiàn)Ifitisfinetomorrow,wewillgoonaship.假如明天天氣好，我們就去旅行。10/232.用if條件句表示客觀真理或普遍現(xiàn)象，主從句時(shí)態(tài)均用普通現(xiàn)在時(shí).即主現(xiàn)從現(xiàn)例.Ifyoufreezewater,itturnsintoice.假如你冷凍水，它將變成冰。Afishdiesifyoutakeitoutofwater.假如你把魚(yú)拿出水，它就會(huì)死掉。11/23注意：在if引導(dǎo)條件狀語(yǔ)從句中，if條件句可直接放在主句后面，若if條件句放句首，從句后面要加逗號(hào)，和主句隔開(kāi)。IfIgetuplate,Iwillbelateforschool.=IwillbelateforschoolifIgetuplate.假如我起床晚了，我就會(huì)遲到。12/23unless引導(dǎo)條件狀語(yǔ)從句unless是if得反義詞，相當(dāng)于ifnot,表“假如不，除非”.Ifyoudon’tworkhard,youwillfail.=Unlessyouworkhard,youwillfail.假如你不努力，你就會(huì)失敗。除非你努力，不然你就會(huì)失敗。13/23真題回顧Wewillhavenowatertodrink

wedon’tprotecttheearth.A.untilB.beforeC.thoughD.if

(,上海,37)（假如我們不保護(hù)地球，我們將沒(méi)有水喝。）14/232.Bobpromisetojoininthefootballmatch

hehastohelphisparentsonthefarm.A.ifB.asC.unlessD.when(,安徽，35）15/233（01上海）Youwillsucceedintheend______yougiveuphalfway.AevenifBasthoughCaslongasDunless16/23Thankyou!GOODBYE!17/23例句：1.Unlessitrains,Iwillgohomeonfoot.假如不下雨，我將走回家。2.Don'ttouchtheinstrumentsunlesstheteacherallowsyou假如沒(méi)有老師允許，不要亂動(dòng)儀器。18/232.if從句用普通現(xiàn)在時(shí)，主句用may/might/can

IfIfinishmyhomework,Icanplaybasketball.假如我昨晚作業(yè)，我就能夠打籃球了。19/233.if從句用普通現(xiàn)在時(shí)，主句用must/should

Ifyouwantgotoagooduniversity,youmuststudyhand.假如你想上好大學(xué)，你必須努力學(xué)習(xí)。20/23Thesportsmeetingwon’tbe2.Don'ttouchtheinstrumentsunlesstheteacher