7.You must repair the computer now.(改為被動語態(tài))
   The computer mustberepairednow.

分析 --你現(xiàn)在必須修理電腦.
--電腦現(xiàn)在必須修理.

解答 答案:be repaired.考查被動語態(tài)."你現(xiàn)在必須修理電腦.",表達為"電腦現(xiàn)在必須修理.".must情態(tài)動詞,被動語態(tài)是be+動詞的過去分詞.repair的過去分詞是repaired.答案是be repaired.

點評 被動語態(tài)表示主語是動作的承受者,被動語態(tài)由"be動詞+及物動詞的過去分詞"構(gòu)成,be動詞的單復(fù)數(shù)要與主語的單復(fù)數(shù)保持一致,還要注意時態(tài)及過去分詞的變法.

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