Discovering: Do the underlined parts have something in common? 1. As the year have gone by, I have been made smaller and smaller 2. A wrist-worn PC has been invented recently 3. The sports meeting has already been held in our school Has/have been done 现在完成时被 现在宝成时自被
1.As the year have gone by, I have been made smaller and smaller. 2. A wrist-worn PC has been invented recently. 3. The sports meeting has already been held in our school. Do the underlined parts have something in common? Discovering: Has/have been done 现在完成时 被动语态 现在完成时的被动语态
现在完成时的被动语态的用法 1表示一个被动的动作发生在说话之前强调对现在造 成的影响和结果 The door has been locked 2表示一个被动的动作或状态开始于过去,持续到现在, 并可能持续下去,常与for或snce引导的时间状语连 用,或用于 How long…?句型中 The important problem has been discussed for nearly two weeks How long has the machine been used? 现在完成时的标志 recently/ already/yet for+一 段时间/ sInce+时间点
现在完成时的被动语态的用法 1.表示一个被动的动作发生在说话之前,强调对现在造 成的影响和结果. The door has been locked. 2.表示一个被动的动作或状态开始于过去,持续到现在, 并可能持续下去,常与for 或since引导的时间状语连 用,或用于How long...?句型中. The important problem has been discussed for nearly two weeks. How long has the machine been used? 现在完成时的标志:recently /already/yet for+一 段时间 /since+时间点