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一般过去时的构成及用法

 

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  一般过去时的构成及用法

  一般过去时表示过去的动作或过去存在的状态,由动词的过去式构成。动词be的过去式为was/were, have的过去式为had. 除不规则动词外,其他动词的一般过去式通常都是在词尾加-ed.

  规则动词的过去式规则

  1.大部分在词尾直接加-ed

  mend-mended wait-waited

  talk-talked discuss-discussed

  2.以-e 结尾的动词,词尾只加-d

  replace-replaced assemble-assembled

  phone-phoned advise-advised

  3.以重读闭音节结尾的动词,双写词尾的辅音

  后,再加-ed

  fit-fitted stop-stopped

  occur-occurred stab-stabbed

  4.以辅音字母+y结尾的动词,先将y变为i,再加-ed

  try-tried occupy-occupied

  5.以-ic 结尾的动词,先在词尾加K,再加-ed

  picnic-picnicked traffic-trafficked

  一般过去时的用法

  1.表示过去某一确定时间发生的动作或存在的状态,可能是一次性的,也可能是过去经常反复发生的,常与表示过去时间的状语连用.

  He lost his purse yesterday.

  It was very cold last night

  Last year we were rather busy.

  When he was a child,he observed things carefully.

  He always got up too late, and never had enough time for breakfast.

  2.用于虚拟语气中,表示对现在或将来的假设,主观意图或愿望等.

  I wish l had your brains, I'm too stupid.

  3.在时间、条件状语从句中,常用一般过去时代替过去将来时,表示过去将来的动作。

  They said they would let us know if they heard any news about him.

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