Question

7．我們的教室一天打掃兩次．Our classroom is cleaned twice a day．．

Answer 1

分析 Our classroom is cleaned twice a day．

解答 答案：Our classroom is cleaned twice a day．分析句子說教室一天打掃兩次，也就是教室作主語，應是被打掃的對象，用被動語態(tài)，這里是說客觀事實用一般現(xiàn)在時，一般現(xiàn)在時的被動語態(tài)的構成是am/is/are+過去分詞，我們的教室 Our classroom 是主語是單數(shù)，打掃用clean，故 Our classroom is cleaned，一天兩次用twice a day作時間狀語．故答案是Our classroom is cleaned twice a day．

點評 這里是考察被動語態(tài)的用法，各個時態(tài)的被動語態(tài)的構成要掌握．