2013考研英语复习语法要点:if only....结构
作者:佚名       时间:09-25

2013考研英语复习语法要点:if only....结构

If only.,.结构
  这一结构有两层意思:一是“要是”、“只要”,一是表达一种感叹的语气,愈为“该……多
  好!”这两层含义都可用虚拟式。例如:
  If only somebody had told us,we could have warned you.
  If only Dad could see now!
  If only I had known the news earlier!
  跟only搭配的有些结构也可用虚拟式,如only that, only for等,意为“若不是”、“要不
是”、“只是”。例如:
I would come only that I am engaged to dine out.
He would probably have done well in
vous.
the examination,only that he gets rather ner-
  Only for my tea,I should have had the headache.
9. as it/as though摘构
  as if / as though可以引出一个状语从句,也可引出一个表语从句,无论哪一种类型的从
  句,只要从句的内容是不真实的都须用虚拟式。与现在事实相反,谓语动词用一般过去
  时,系动词be用were,与过去事实相反则用had十过去分词;表示将来则用would
  (could, might)+动词原形。例如:
  The whole family greeted me as though I were one of the families.
  He talked as if he had taken part in the game.
  I felt as if I had been with you all along.
    She cried as if her heart would break.

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