when引导的时间状语从句(1)

林雪222010310011126•Whentheteachercamein,thestudentsbecamequiet.•Aftertheteachercamein,thestudentsbecamequiet.•BeforeIgottotheairport,theguestshadleft．•WhenIgottotheairport,theguestshadleft．•Afterhefinishedhishomework,hewenttoplaybasketball.•Whenhefinishedhishomework,hewenttoplaybasketball.•IwaswatchingTV.•WhenIwaswatchingTV,mysisterwasintheshower.•Mysisterwasintheshower.•Mybrotherwasdoinghishomework.•Thetelephonewasringing.•Whenthetelephonerang,mybrotherwasdoinghishomework.“atthesametime”Whenweweredancing,astrangercamein.“when”means“atthesametime”WhenIgottotheairport,theguestshadleft．“when”means“before”WhenIwenttoBeijing,IvisitedtheTianAnmenSquare.“when”means“after”Afterthestudentsbecamequiet,theteachercamein.Whenthestudentsbecamequiet,theteachercamein.AfterIwenttoBeijing,IvisitedTianAnmenSquare.WhenIwenttoBeijing,IvisitedtheTianAnmenSquare.BeforeIgottotheairport,theguestshadleft．WhenIgottotheairport,theguestshadleft．Use“when”topractice.Completethesentenceswiththecorrecttensefortheverbsinbrackets.1.WhenJohn________(arrive),I___________(cook)dinner.2.Whenshe________(come)intomyroom,I__________(read)abook.3.Whenwe____________(watch)TV,thetelephone__________(ring).4.Whenwe___________(dance),astranger__________(come)in.wasreadingcamewerewatchingrangweredancingcamearrivedwascookingWhatwereyourfamiliesdoingwhenyouweredoingyourhomework?Pleasewrite3sentenceswith“when”todescribe.