北京市房山区周口店中学高中英语 Unit2 Lesson1 Modern Heroesl Grammar课件 北师大版必修1.ppt

findmoresentences whenthespaceshipwasliftingoff icouldreallyfeelthehighgravity 1whilethespaceshipwascirclingtheearthforthesixthtime yangliweispokewithgroundcontrolingansu 2whilehewassleeping thespaceshipcircledtheearthtwice 3whenthespaceshipwasdoingitsseventhcircle yangliweishowedtheflagsofchinaandtheunitednations 4thesurfaceofthespaceshipwasglowingredwhenitcamebackintotheearth satmosphere 5asyangliweireturnedintotheearthatmosphere helicopterswereflyingto 6millionsofpeoplealloverchinawerewatchingtvwhenthespaceshiplandedsafely pastsimple 一般过去时 didpastcontinuous 过去进行时 was were v ing 语法小结 form pastsimple 一般过去时 描述过去过去完成的动作或过去的情景和习惯 sheclimbedthestairsandwenttoherroom healwaysphonedonfridays pastcontinuous 过去进行时 1 表示过去某段时间正在进行的动作 hewaswatchingtvallevening 2 形成某些事件发生的背景动作 shewaswaitingforhermotherwhenwemetforthefirsttime 语法小结 用when whileoras来连接这两种时态 whenthespaceshipseparatedfromtherocket isuddenlygotafeelingofsoaringintothesky whilehewassleeping thespaceshipcircledtheearthtwice asyangliweireturnedintotheearthatmosphere helicopterswereflyingto 语法小结 when while区别 when可以和延续性动词连用 也可以和短暂性动词连用 而while只能和延续性动词连用 givemeacallwhenyouarriveattheairport 从句动作和主句动作同时发生 且从句动作为延续性动词时 when while都可使用 when while asweweredancing astrangercamein whatwaspatdoingwhensheheardthecrash whatdidpatdowhenshelookedoutofthewindow shewasdryingherhair shecalledanambulance whatwasjenniferdoingwhenshesawtheboy whatwastheboydoingwhenjennifersawhim whatdidjenniferdowhensheranoutofthehouse shewascooking bakingacake hewasclimbingintoalorry shetooktheboyoutofthelorry translatethefollowingsentenceswithwhen 1 tom进来时 我正洗衣服时 iwaswashingclotheswhentomcamein 2 当我到家的时候 妈妈正在做饭 momwascookingwhenigothome 3 他正笑着的时候 门突然开了 他妻子走了进来hewassmilingwhenthedooropenedandhiswifecamein 4 我正想着这件事时 突然有人叫我的名字 iwasthinkingofthiswhensomeonecalledmyname theywereplayingbasketballwhentombrokehisleg thefamilywerewatchingtvwhentheyheardadogbarking liftoffcanfeelthehighgravit