It’s a rule in my class that our classroom ______ before 6:00 p.m. every day.


  1. A.
    be able to clean
  2. B.
    should be cleaning
  3. C.
    must clean
  4. D.
    must be cleaned
D
試題分析:be able to能,強調(diào)自身能力能夠做某事;should應該;must一定。句意:每天下午六點前必須打掃教室,在我們班是一條規(guī)定。結合語境可知從句主語是動作的對象,故用被動語態(tài),選D。
考點:情態(tài)動詞及被動語態(tài)
點評:情態(tài)動詞的區(qū)別主要在于表達語氣的不同,需要結合語境具體分析。語態(tài)問題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)。
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