Module4GreatInventionsUnit3LanguagepracticeLanguagepracticePaperandprintinghavebeenusedforages
Thebatteryhasn’tbeenchangedforacoupleofmonths
Hasitbeenpublishedyet
InformationcanbekeptonCD-ROMs
Bookscouldonlybeproducedoneatatime
Canbooksbereplacedbycomputers
现在完成时的被动语态:have/has(not)been+过去分词情态动词的被动语态:情态动词(not)+be+过去分词表格:被动态基本结构时态被动语态结构一般现在时一般过去时现在进行时过去进行时一般将来时过去将来时现在完成时过去完成时am/is/aredonewas/weredoneam/is/arebeingdonewas/werebeingdoneshall/willbedonewouldbedonehave/hasbeendonehadbeendone几种特殊结构1
Myunclegavemeagiftonmybirthday.2
Weoftenhearhimplaytheguitar.•Iwasgivenagiftonmybirthday.•Agiftwasgiventomeonmybirthday
•Heisoftenheardtoplaytheguitar•注意:see,watch,hear,notice,feel,make,listento,lookat等动词/短语后作宾语补语的不定式都不带to;但改成被动语态后必须带to
ArecorderisusedinourEnglishclasseveryday
recorderEnglishclassLet‘