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        1. 精英家教網 > 初中英語 > 題目詳情
          -- Excuse me, sir, smoking          in the gas station.
          -- Oh, I'm really sorry.
          A. doesn't allow                B. isn't allowed             C. aren't allowed
          B
          句意:打擾了先生,在加油站是不允許吸煙的。結合語境可知本句主語是被允許的對象,故用被動語態(tài),smoking表示抽象含義,故謂語動詞用單數(shù)。被動語態(tài)一般由be動詞加動詞的過去分詞構成,故選B。
          點評:此類題型主要是確定句子主語與謂語動詞的關系。如果是主動關系則用主動語態(tài),反之如果是動賓關系,則用被動語態(tài)。注意一些接不帶to的不定式做賓語補足語的動詞用作被動語態(tài)時,不定式符號to要加上。
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