9A Unit 2-Unit 3 Grammar 被动语态复习I.被动语态的结构：be+动词的过去分词（p.p）1.规则动词+ed 例：help helped2.不规则动词自己背熟默写 例：fly flown有时态变化II.动词be的各种时态形式：1.一般现在时：am / is/ are2.一般过去时：was / were3.一般将来时：will be4.现在完成时：have been / has been5.情态动词：can be / may be / must be / should beIII.主动语态改被动语态的几种情况： 1)及物动词的被动语态：1.Girls like singing such songs. Such songs _ _ singing by girls.2.Someone stole my bicycle last week.My bicycle _ _ last week.3.He has
