江苏省南京师范大学第二附属初级中学八年级英语上册 Unit 8 Natural disasters Grammar课件 （新版）牛津版.ppt

unit8 naturaldisasters grammar breakbreakdownbecauseof vi 损坏 打破出故障 坏掉由于 因为 wordsandexpressionreview presentcontinuoustensebe am is are verb ing 现在进行时 tom play football is ing lucy is read abook ing whatistomdoing whatislucydoing tom play football was ing lucy was read abook ing whatwastomdoingatthatmoment whatwaslucydoingat2 30p m yesterday iwassleepingwhenitstartedtorain 2 iwassleepingwhentheearthquakestarted lookatthefollowingsentencescarefully payattentiontothecoloredparts 3 outside peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown 4 ifeltnervousandmyheartwasbeatingfast 5 hourslater asiwastryingtofindwayout isuddenlyheardsomenoiseaboveme weusethepastcontinuoustensetotalkaboutthingsthatwerehappeningataparticulartimeinthepast pastcontinuoustense过去进行时 过去进行时表示在过去某一时刻或某一段时间内正在进行或发生的动作 形式为was were v ing 常与表示过去的时间状语连用 如 at10p m lastnight from8p m to9p m lastsaturday等 或者与when while as引导的过去时间状语连用 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 t 4 疑问句 将was were移到主语前5 特殊疑问句 疑问词 was were 主语 ving makesentences 1 at9o clocklastsunday2 atthistimeyesterday3 from7a m to6p m lastmonday4 atthattime5 from9to10lastnight watchtvreadbookspractiseswimmingwatchafilmmakecakes asnowstormhitsunshinetown asnowstormhitsunshinetown mr wuisaskingthestudentsaboutit completetheirconversationwiththecorrectformsoftheverbsinbrackets mr wu whataterriblesnowstorm itstartedataboutseventhismorning i read thenewspaperthen what you do simon simon i have breakfast mr wu whataboutyou millie wasreading weredoing washaving millie i walk tothebusstop sandy isawyouandyourparentsstandingonthesideoftheroad you wait forataxi sandy yes mydad scarbrokedownbecauseofthecoldweather he ring someonetocomeandhelpwhenyousawme waswalking were waiting wasringing lookatthepicturesandanswerthequestions whatwastherabbitdoingjustnow whatwasthepigdoingjustnow hewasjumpingjustnow hewasdancingjustnow therabbitwasjumpingwhilethepigwasdancing thewormwaseatingwhilethedogwasreading twolongactionswentonatthesametime wewereclappingourhandswhiletheteacherswerewalkingacrossthepark therabbitwasjumpingwhilethepigwasdancing thewormwaseatingwhilethedogwasreading whilethepigwasdancing therabbitwasjumping whilethedogwasreading thewormwaseating while whenandas都表示 当 的时候 e g iwassleepingwhentheearthquakestarted peoplewererunninginalldirectionswhilepiecesofglassandbrickswerefallingdown asiwastryingtofindmywayout isuddenlyheardsomenoiseaboveme usingwhile whenandas 1 当连接同时发生的两个延续性长动作时 常用while引导 e g whileiwaswatchingtv hewaslisteningtomusic milliewasreadingabookwhileeddiewassleeping 2 如果短暂性的动作是主句时 我们可以用when while或as引导 e g when while asmilliewaswatchingtv andycameintotheroom 3 如果延续性的动作是主句时 我们经常用when来连接 e g milliewaswatchingtvwhenandycameintotheroom 4 如果两个短暂性的动作同时发生 我们通常用as连接 e g asmilliesatdownonthesofa andycameintotheroom 注 当一个短暂性动作发生的同时伴随着一个延续性的动作 这时我们通常用过去进行时来表示延续性的动作 用一般过去时来表示短暂性的动作 playinginthesnow someclass1 grade8studentswenttoplayinthesnow completethesentenceswiththecorrectformsoftheverbsinblanks usewhen whileandastoconnectthesentences simon arrive amy get somesnowfromtheground 2 suzyandkitty build asnowman millie take photos 3 daniel fall over he make abigsnowball when arrived fell while as when wasmaking while wasbuilding wastaking