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初一英语词汇复习:数词小结(三)

2016-03-02 00:00:00浏览:
初一英语词汇复习:数词小结(三)  9.
与数词相关的主谓遥原则   1)当名词词组中心词为表示时间、路程、金遥或重量等复数名词时,往往根据意义遥的原则,把这些复数名词看做一个整体,谓语采用单数形式。
如:   Twenty dollars is not enough.
  Two months has passed before we realized.
  但是如果数词单用,表示人或物,谓语动词一般用复数。
如:   Three were killed and ten were missing in that accident.
  2)如果名词词组中心词是分数或百分数+of-词组,谓语动词的单、复数形式取决于of-词组中名词或代词的单、复数形式:如果of-词组中名词或代词是单数或遥数名词,谓语动词用单数形式;如果of-词组中名词或代词是复数,谓语动词也用复数形式。
如:   Two thirds of the earth is covered with water.
  Two thirds of the people present are against the plan.
  3)如果主语是many a,more than one+单数名词构成,尽管从意义上看是复数,但谓语动词仍用单数形式。
如:   Many a student in this class has hoped a long break.
  4)a+单数名词+or two做主语,谓语动词用单数形式。
如one or two+复数名词,谓语动词用复数形式。
如:   A word or two is missed in the sentence.
  One or two words are missed in the sentence.
  相关阅读:   初一英语词汇复习:数词小结(一)   初一英语词汇复习:数词小结(二)