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托福语法之ought的各种形式

时间:2013-12-30 13:01:37

(单词翻译:单击)

   ought是情态动词。

  ought没有其他形式,可用于现在时以及将来时。用于过去时则位于动词过去式之后或不定式的完成式之前:
  I ought to write to him today/tomorrow.
  我今天/明天应该给他写封信。
  I knew I ought to write to him.
  我那时知道我应该给他写封信。
  She said I ought to write.
  她说我应该写。
  I know/knew that I ought to have written.我知道/那时知道我该写的。
  否定式:ought not/oughtn't
  疑问式:ought I?等
  否定疑问式:ought I not?/oughtn't I?等
  ought与带to的不定式连用。为了提醒学生这一点,常称之为ought to。
  问句或话语中用ought to的时候,可以用 should来回答;用should的问句或话语也可以用ought to回答:
  —You ought to put in central heating.
  —Yes,I suppose I should.
  —你应该装上暖气。
  —是的,我应该装。
 

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0 central EctyT     
adj.中心的,位于中心的;中央的;主要的,最重要的
参考例句:
  • This is the central city of the whole area.这是整个地区的中心城市。
  • The central figure in the painting is the artist's daughter.画中间的那个人是画家的女儿。
0 heating KrLz0U     
n.加热,供暖,暖气装置;adj.加热的,供暖的
参考例句:
  • They will install a heating and lighting system in our house.他们将在我们家装上供热供电系统。
  • If the pressure is too low,the heating system will act up.如果压力太低,供暖系统就会出毛病。
0 suppose drDwo     
v.料想,猜测;假定,以为;(祈使句)让,设
参考例句:
  • I suppose he will be back by eight o'clock.我想他八点钟以前会回来。
  • Suppose he can't come,who will do the work?如果他不能前来,谁来做这项工作呢?
0 said IYtxh     
v.动词say的过去式、过去分词
参考例句:
  • He said to me that he could not come.他对我说他不能来。
  • He said to his mother that he would do it by himself.他对他的母亲说他将自己独立做那件事。
0 ought XJKx4     
v.aux.应该,大概;n.责任
参考例句:
  • Ought I to hand in the homework today?我应当在今天交上作业吗?
  • They ought to be here by now.他们这个时候该到了。