Unit8NaturaldisastersPeriod3Grammar课件牛津译林版八年级英语上册

Unit8

NaturaldisastersPeriod3Grammar课前自主预习单词闯关损坏；打破

vi.________→(过去式)________

→(过去分词)________

→坏的

adj.________breakbrokenbrokebroken短语互译1.在路边

____________________2.(车辆或机器)出故障，坏掉

____________3.becauseof____________4.fallover____________由于onthesideoftheroadbreakdown跌倒句型在线1.多么可怕的暴风雪啊！________aterriblesnowstorm!2.桑迪，我看到你和你父母正站在路边。Sandy，Isawyouandyourparents________________________________oftheroad.3.因为天气冷，我爸爸的汽车出故障了。Mydad′scar__________becauseofthecoldweatherbrokedownWhatstandingontheside语法聚焦1.过去进行时2.when，while与as的用法课文呈现APastcontinuoustenseWeusethepastcontinuoustensetotalkaboutthingsthatwerehappeningataparticulartimeinthepast.我们用过去进行时来谈论过去某个特定时间发生的事情。Iwas(not)sleepingat10p.m.lastnight.You/We/Theywere(not)He/She/Itwas(not)WasIsleepingat10p.m.lastnight?Wereyou/we/theyWashe/she/itYes，Iwas.you/we/theywere.he/she/itwas.No，Iwasn′t.you/we/theyweren′t.he/she/itwasn′t.AsnowstormhitSunshineTown

▶AsnowstormhitSunshineTown.MrWuisaskingthestudentsaboutit.Completetheirconversationwiththecorrectformsoftheverbsinbrackets.MrWu：Whataterriblesnowstorm!Itstartedataboutseventhismorning.I(1)___________(read)thenewspaperthen.What(2)________you________(do)，Simon?Simon：I(3)____________(have)breakfast.MrWu：Whataboutyou，Millie?wasreading

weredoingwashavingMillie：I(4)___________(walk)tothebusstop.Sandy，Isawyouandyourparentsstandingonthesideoftheroad.(5)_________you___________(wait)forataxi?waswalkingWerewaitingSandy：Yes.Mydad′scarbrokedownbecauseofthecoldweather.He(6)___________(ring)someonetocomeandhelpwhenyousawus.wasringingBUsingwhen,whileandasWhen，whileandascanbeusedasconjunctionsoftime.Theyallmean“duringthetimethat”.When、while和as可以用作时间的连词。它们都表示“在那段时间内”。Iwassleepingwhentheearthquakestarted.Peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown.AsIwastryingtofindmywayout，Isuddenlyheardsomenoiseaboveme.地震发生时我正在睡觉。人们四处奔跑，玻璃和砖块纷纷落下。正当我试图找到出去的路时，我突然听到上面有声音。

Note：Whenashorteractionhappenedatthesametimeasalongeraction，weusethepastcontinuoustenseforthelongeractionandthesimplepasttensefortheshorteraction.Whentherearetwolongactions，weoftenusewhile.

注意：当一个较短的动作与一个较长的动作同时发生时，我们用过去进行时表示较长的动作，用一般过去时表示较短的动作。当有两个长动作时，我们经常使用while。Iftheshorteractionisinthemainclause，wecanusewhen，whileorastojointhem.如果较短的动作在主句中，我们可以使用when、while

或as

来连接它们。When/While/AsMilliewaswatchingTVAndycameintotheroom.当Millie看电视的时候Andy走进了房间。Ifthelongeractionisinthemainclause，weoftenusewhentojointhem.如果主句中有较长的动作，我们经常用When加入它们。MilliewaswatchingTVwhen

Andycameintotheroom.Andy进屋时Millie正在看电视。Weuseacommatoseparatethetwoclausesifwhen，whileorascomesatthebeginningofthesentence.如果when、while或as出现在句首，我们就用逗号分隔这两个从句。Whentheearthquakestarted，mostpeopleweresleeping.地震发生时，大多数人都在睡觉。Playinginthesnow▶SomeClass1，Grade8studentswenttoplayinthesnow.Completethesentenceswiththecorrectformsoftheverbsinbrackets.Usewhen，whileorastoconnectthesentences.1____________Simon______________(arrive)，Amy____________(get)somesnowfromtheground.2______________SuzyandKitty____________(build)asnowman，Millie_____________(take)photos.3Daniel_________(fall)over__________________he____________(make)abigsnowball.WhenarrivedWhen/While/Aswerebuildingwastakingwasgettingfellwhile/as/whenwasmaking4Peter____________(hide)behindatree__________asnowball____________(hit)him.5______________Millieandherclassmates__________(play)inthesnow，Andy_______(run)towardsthem.wereplayingWhen/While/Asranwashidingwhenhit考点精讲

break

vi.损坏；打破[观察]

Mydad′scarbrokedownbecauseofthecoldweather.因为天气冷，我爸爸的汽车出故障了。MyheartwouldbreakwhenIheardthenews.我听到这则消息时，心都要碎了。[探究]

break作________动词时，通常由物作主语。不及物[拓展]break还可作________动词，意为“打破，打碎”；也可作________，意为“休息，暂停”，常用短语为___________________，意为“休息一会儿”。________为形容词，意为“破碎的，坏掉的”。及物名词have/takeabreakbroken[搭配]活学活用

(1)—Manager，allthemachines________justnow!—What?Calltheengineeratonce.A.brokedown

B.turneddownC.brokeout

D.turnedoutA

[解析]考查动词短语辨析。

breakdown意为“(车辆或机器)出故障，坏掉”；turndown意为“调低(声音)”；breakout意为“爆发”；turnout意为“证明是……”。

句意：“经理，刚才所有机器都坏了！”“什么？立刻给工程师打电话。”故选A。(2)Ididn′twatchTVlastnight,becausemyTVsetwas________(break)．broken句型透视1Whataterriblesnowstorm!多么可怕的暴风雪啊！[探究]该句是由________引导的省略了主语和谓语的感叹句，其完整结构为“Whataterriblesnowstormitis！”。what[拓展]由what/how引导的感叹句的句型结构如下：

What＋形容词＋________名词(＋主语＋谓语)!What＋a/an＋形容词＋________可数名词(＋主语＋谓语)!What＋形容词＋_______可数名词(＋主语＋谓语)!不可数单数复数________＋形容词/副词(＋主语＋谓语)!Whatfineweatheritis!多么晴朗的天气啊！Howheavilyitisraining!雨下得多么大啊！How活学活用

(1)________cleverdogLuckyis!ItcanunderstandMrSmith′sorders.A.What

B.Whata

C.HowD.HowaB[解析]考查感叹句。句意：Lucky是一只多么聪明的狗啊！它能理解史密斯先生的命令。此题考查的感叹句结构：What＋a/an＋形容词＋名词单数可数＋主语＋谓语！故选B。(2)—________fastChinaisdeveloping!—Yes，wearesoluckytoliveinsuchagreatcountry.A.WhatB.Whata

C.HowD.HowaC[解析]考查感叹句。句意：“中国发展得多么迅速啊！”“是的，我们是如此的幸运，能生活在这样一个伟大的国家。”该句强调的是副词fast，应用how引导，其感叹句结构为“How＋副词＋主语＋谓语！”。故选C。语法聚焦过去进行时教材典句1．Theyweredoingmorningexercisesat9:05yesterday

morning.2．TheywereplayingbasketballatthistimelastSunday.3．Shewasdrinkingmilkatthistimeyesterday.4．Iwasplayingcomputergames

atthattime.5．Shewasreadingnewspaper

from10to11yesterdaymorning语法探究●1

：be(was/were)+verb-ingWeusethepastcontinuoustensetotalkaboutthingsthatwerehappeningataparticulartimeinthepast.(1)过去进行n时主要表示在过去某一时刻正在进行的动作。e.g.a)

Theywereeatingbreakfastat7:00amyesterday.b)

Iwaswritingaletteratthistimeyesterday.c)

Fiveminutesago，DannywaslookingoutofthewindowandSuzywasreadingabook.(2)在过去某段时间一直在进行的动作e.g.a)From1983to1998，hewasteachingatYale.b)

Theywerebuildingadamlastwinter.●2

过去进行时的句式1)基本结构：was/were＋V-ing2)肯定句：

主语＋was/were＋V-ing3)否定句：was/werenot＋V-ingwasnot＝wasn′twerenot＝weren′t4)疑问句：将was/were移到主语前5)特殊疑问句：疑问词＋was/were＋主语＋V-ing…?活学活用