人教版英语八年级下册unit-5-section-a(grammar-focus)课件(共22张pp

Unit5GrammarfocusWhatishedoingnow?Heisplayingtheguitar.Heissinging.Theyarestudying.structurebe(not)+V-ing(现在分词）amisarePresentcontinuoustimeisusedtodescribesomethingishappeningrightnow,oratthismoment.Hewasplayingbasketball.WhatwasJayzhoudoingatthistimeyesterday?Shewasshopping.from8to9lastnightWhatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.ThePastContinuousTense(过去进行时)基本结构:was/wasn’twere/weren’tdoing+Sb+______/_______/______and______+wasdoing.______,______and______+weredoingIsheheitweyoutheyStage2ApplytheruleWhatweretheydoingwhenitbegantorain?Theywereplayingcomputergameswhenitbegantorain.playcomputergamesAskandanswer.Theywereplayingchesswhenitbegantorain.playchessTheywereplayingfootballwhenitbegantorain.playfootballWhatwasyourfatherdoingwhenyoucamebackhomeyesterday?Hewascooking.Whatwasyourbrotherdoingwhenyousawhimhalfanhourago?Hewasplayingcomputergames.过去进行时和When连用Awas/were+doingsthWhenB+didsth.when引导的时间状语从句可以表示一个时间点,也可以表示一个时间段。从句中可以用短暂性动词，也可以用延续性动词长时动作短时动作Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhileWhatweretheydoingyesterdayafternoon?Hewasplayingbasketballwhileshewassleeping.过去进行时和while连用Awas/were+doingsthWhileB+was/were+doingsthwhile引导的时间状语从句常指一个时间段,从句中的动词常为延续性的。while有时还可表示主句的动作与从句的动作同时发生长时动作长时动作WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.1.I______________(watch)TVwhenshe_______(call).2.Whenthephone_______(ring),she___________(write)aletter.3.Whilewe____________(have)apicnic,it_________(start)torain.waswatchingcalledrangwaswritingwerehavingstarted4.Whilewe____________(wait)forthebus,agirl____________(run)uptous.5.Whilemother___________(make)thebed,thedoorbell____________(ring).6.We____________(test)thenewmachinewhentheelectricity________(go)off.werewaitingwasrunningweretestingwentwasmakingrang(过去进行时)过去进行时表示过去某一时刻或某段时间正在进行的动作。过去进行时由“was/were+动词-ing形式”构成。ThePastContinuousTensesummary1.基本概念:表示过去某一时刻或某一段时间内正在进行的动作,常与时间状语atthattime,atthatmoment,atthistimeyesterday,atteno’clockyesterday等连用。如：2.标志性词:Iwasplayingbasketballatfouryesterdayafternoon?atthetableonthebasketballgroundunderthetreeontheplaygroundA.WhatwastheboydoingattablelastSundayat5pmB.Hewasspeakingwithagirl.A.Wasthegirlatthetablewriting?B.No,shewasn’tlastSundayat5pm