Unit5SectionAGrammarFocus-4c课件人教版英语八年级下册

SectionAGrammarFocus-4cUnit5Whatwereyodoingwhentherainstormcame?感觉像首先入睡逐渐变弱确信，确保一片凌乱互相帮助在困难时期在……的时候feellikeatfirstfallasleepdiedownmakesureinamesshelpeachotherintimesofdifficultyatthetimeof...Review学习目标Keywords&phrases:havealook;icy;kid;atthetimeof;inbadshape;rightaway.Keysentences:1.Whatwasshedoingatthetimeoftherainstorm?2.WhileLindawassleeping,JennywashelpingMarywithherhomework.

3.WhatwasBendoingwhenitbegantorainheavily?Tolearntheusageof“when”and“while”.PresentationGrammarFocusWhatwereyoudoingateightlastnight?Whatwasshedoingatthetimeoftherainstorm?Whatwashedoingwhentherainstormcame?Iwastakingashower.Shewasdoingheromework.Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?WhatwasJennydoingwhileLindawassleeping?Whenitbegantorain,Benwashelpinghismommakedinner.WhileLindawassleeping,JennywashelpingMarywithherhomework.Grammar过去进行时（PastProgressiveTense）

语法概述过去进行时表示在过去某一时刻或某一段时间正在进行的动作。其基本结构为“was/were+动词-ing”。过去进行时的基本用法1MissLiwasshoppingatthistimeyesterday.IwaslookingformylostcatatninelastMondaymorning.◆

表示过去某一时刻正在进行或发生的动作，与表示过去某一时间点的时间状语连用，如at3o'clockyesterdayafternoon,atthistimeyesterday等。GrammarPastProgressiveTense过去进行时的基本用法2IwaswatchingTVthewholenight.Wewerehavingclassesalldayyesterday.◆表示过去某一段时间内一直进行的动作，常与thewholeday,alldayyesterday等时间状语连用。有时没有明显的时间状语，可根据上下文语境判断。过去进行时的基本句式

ThegirlwasshoppingwhenIsawher.主语+was/were+v-ing+其他.主语+was/were+not+v-ing+其他.Hewasnotworkingatthattime.肯定句否定句—Wereyouplayingbasketballthen? —Yes,Iwas./No,Iwasn't.Was/Were+主语

+v-ing+其他?特殊疑问词+was/were+主语

+v-ing+其他?—WhatwereyoudoingatninelastSundaymorning?—Iwasreading.一般疑问句特殊疑问句肯定回答：Yes,主语+was/were.否定回答：No,主语+wasn't/weren't.过去进行时的基本句式

过去进行时与其他时态的区别现在进行时一般过去时过去进行时用法表示现在或最近正在进行和发生的动作。表示过去某个时间发生过的动作或存在的状态。强调动作已经结束。表示过去某一时刻或某一时间正在进行的动作。强调动作的未完成性。构成主语+am/is/are+v-ing主语+v-ed主语+was/were+v-ing时间now(或引起注意的look/listen等动词）yesterday,lastnight,twoyearsagoPresentationGrammarFocusWhatwereyoudoingateightlastnight?Whatwasshedoingatthetimeoftherainstorm?Whatwashedoingwhentherainstormcame?Iwastakingashower.Shewasdoingheromework.Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?WhatwasJennydoingwhileLindawassleeping?Whenitbegantorain,Benwashelpinghismommakedinner.WhileLindawassleeping,JennywashelpingMarywithherhomework.

Howtoadd-ing

?直去双变1）

一般动词在词尾加-ing,如go--going。2)以不发音字母e结尾的动词,去掉e,再加-ing。如:

come--coming

make--making

3)以重读闭音节结尾的动词,如果末尾以一个辅音字母结尾,应先双写这个字母,再加ing。如:get--getting

swim--swimming

4)以字母ie结尾的动词,变ie为y,再加ing。如:die→dying

forget________ play________ leave________sleep________ carry________ lie________turn________ kid________ hit________Pleasewritethe-ingformofthefollowingwords.forgettingsleepingturningplayingcarryingkiddinglyingleavinghittingPracticePresentationGrammarFocusWhatwereyoudoingateightlastnight?Whatwasshedoingatthetimeoftherainstorm?Whatwashedoingwhentherainstormcame?Iwastakingashower.Shewasdoingheromework.Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?WhatwasJennydoingwhileLindawassleeping?Whenitbegantorain,Benwashelpinghismommakedinner.WhileLindawassleeping,JennywashelpingMarywithherhomework.when与while引导的时间状语从句

when和while都可意为“当······时”，用来引导时间状语从句，表示主句动作发生的背景。语法概述when引导的时间状语从句

Whenhewasachild,healwaystriedoutnewideas.◆

表示主句动作发生的特定时间，既可指时间点，也可指时间段。◆

从句的谓语动词可以是延续性动词，也可以是非延续性动词；从句的动作和主句的动作既可同时发生，也可以是先后发生。Itwassnowingwhenhearrivedatthestation.

WhenIgottotheairport,theguestshadleft.◆

从句位于主句之前或之后，当位于主句之前时，与主句要用逗号分开。◆

当主句为将来时或表示将来意义时，从句要用一般现在时表示将来。（主将从现）Theboywillbeawriterwhenhegrowsup.while引导的时间状语从句

WhileLindawassleeping,Jennywashelpingmewithmyhomework.◆

while引导的时间状语从句强调主句动作在从句动作进行的过程中发生，或者同时发生。从句的谓语动词必须为延续性动词，常用进行时。TheboyfellasleepwhileIwasreadingthestory.When和while的区别WhenIarrivedathome,mymumwascooking.主句的动作时持续的，而从句的动作是短暂的，此时用_________引导时间状语从句，主句用_________时态，从句用________时态。when过去进行一般过去主句从句短暂性动词（短动作）延续性动词（长动作）When和while的区别2.Iarrivedathomewhile/whenmymumwascooking.主句的动作是短暂性的，从句的动作是持续性的，此时用___________引导从句，主句用_________时态，从句用__________时态。while/when一般过去过去进行从句主句短暂性动词（短动作）延续性动词（长动作）When和while的区别3.IwaswatchingTVwhilemymotherwascooking.主句和从句的动作在过去的某时刻或某时段同时发生，而且动作都是持续性的，此时用________引导从句，并且主句和从句都用___________时态。while过去进行主句从句长动作长动作4aLookatthetableandwritesentenceswithbothwhileandwhen.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwashWhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.1.WhileJohnwasplayingthepiano,Maryleftthehouse.

JohnwasplayingthepianowhenMaryleftthehouse.2.While

Johnwascleaninghisroom,Maryturnedontheradio.

JohnwascleaninghisroomwhenMaryturnedontheradio.3.While

Johnwasshopping,Marytookthecartothecarwash.

JohnwasshoppingwhenMarytookthecartothecarwash.4bFillintheblankswithwas,were,whenorwhile.At7:00a.m.,Iwokeup.______I_____makingmybreakfast,mybrother_____listeningtotheradio.______Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook.______wegottotheplaceoftheaccident,thecar_____inbadshapefromhittingatree.Butluckily,thedriver_____fine.Theroads______icybecauseoftheheavysnowfromthenightbefore.WhilewaswasWhileWhenwaswaswereadj.覆盖着冰的；冰冷的看一看4cWhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.

YouYourpartner9:00a.m.11:30a.m.4:00p.m.9:00p.m.A:Whatwereyoudoingatnineo'clocklastSundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:You'rekidding!PairworkWhatwereyoudoingat…lastSunday?9:00a.m.11:00a.m.8:00p.m.10:00p.m.ExampleA:Whatwereyoudoingatnineo’clocklastSunday?B:Iwasrunning.Howaboutyou?A:Iwasreading.B:You’rekidding!Exercises一、单项选择。1.Sorry,Ididn'tseeyou,becauseI_____apicture.A.draw B.drew C.wasdrawing D.havedrawn2.Amon_____hisshipinabigstormwhenagiantfishcameoutofthesea.A.willsail B.issailing C.wassailing D.hassailed3.StudentsinGradeNine_____amathsexamatthistimeyesterday.A.take B.aretaking C.weretaking D.havetakeCCC4.—_____didtherainstormcome?—Whilewe_____aphysicslessonyesterday.A.When;havehad B.While;arehavingC.When;werehaving D.While;have5.Tonycalledme_____Iwasdoingmyhomework.A.if B.because C.while D.until6.They_____onthesofawhenthetelephone_____.A.sit;rang B.weresitting;rang C.sat;wasringingCCB7.—Oh!What'swrongwithyourfinger?—IhurtitwhileI_____amodelplane.A.made B.wasmaking