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1、Unit8NaturaldisastersGrammarbreakbreakdownbecauseofvi.損壞；打破出故障；壞掉由于；因為WordsandexpressionreviewPastcontinuoustenseIwassleepingwhenitstartedtorain.2.Iwassleepingwhentheearthquakestarted.Lookatthefollowingsentencescarefully.Payattentiontothecoloredparts.3.Outside,peoplewererunninginalldirec
2、tionswhilepiecesofglassandbrickswerefallingdown.4.Ifeltnervousandmyheartwasbeatingfast.5.Hourslater,asIwastryingtofindwayout,Isuddenlyheardsomenoiseaboveme.1.I___________whenitstartedtorain.2.I___________whentheearthquakestarted.3.Outside,people____________inalldirectionswhilepiecesofgla
3、ssandbricks______________down.4.Ifeltnervousandmyheart_______________fast.5.Hourslater,asI____________tofindwayout,Isuddenlyheardsomenoiseaboveme.wassleepingwassleepingwererunningwerefallingwasbeatingwastryingWhatwereyoudoingat7o’clocklastnight?Iwasdoingsomehousework.Iwashavingdinner.Exe
4、rciseWhatwereyoudoingbetween7o’clockand9o’clockyesterday?Iwasdoingmyhomework.IwaswatchingTV.Whatwasyourfatherdoingwhenyoucamebackhomeyesterday?Hewascooking.Whatwasyourbrotherdoingwhenyousawhimhalfanhourago?Hewasplayingcomputergames.Whatweretheydoingatthattimelastweek?Theywereshopping.How
5、aboutthem?Theywerehavingapicnic.過去進(jìn)行時主要表示：?在過去某一時刻正在進(jìn)行的動作Theywereeatingbreakfastat7:00amyesterday.(b)Iwaswritingaletteratthistimeyesterday.(c)Fiveminutesago,DannywaslookingoutofthewindowandSuzywasreadingabook.Pastcontinuoustense?在過去某段時間一直在進(jìn)行的動作(a)From1983to1998,hewasteachingatYale.(b)The
6、ywerebuildingadamlastwinter.Pastcontinuoustense2.過去進(jìn)行時的句式(1)基本結(jié)構(gòu)：was/were+verb-ing(2)否定式：was/werenot+verb-ingwasnot=wasn’twerenot=weren’tIwasdoingsomeshopping.Peoplewererunningwildly.Iwasnotreading.Peoplewerenotrunningwildly.(3)疑問句：將was/were調(diào)到主語前結(jié)構(gòu)為:Was/Were+主語+verb-ing?回答：Yes,主語+was/wer
7、e.No,主語+wasnot/wasn’t.werenot/weren’t.Washerunning?Yes,hewas./No,hewasn’t.Weretheyrunning?Yes,theywere./No,theyweren’t.Whatwasthegirldoingjustnow?Shewasrunningjustnow.Whatwastheboydoingjustnow?Hewasjumpingjustnow.Whatwasthebeardoingjustnow?Itwasskiingjustnow.Itwassnowingt
