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新概念英语第一册语法总结:过去进行时

来源:网络资源 文章作者:@佚名 2016-11-24 10:31:54

  奥数网:小编为大家准备了新概念英语第一册语法分析,一起来看看吧~

  过去进行时

  ——表示过去正在进行的动作,经常用在when, while, as引导的状语从句中。

  结构:was/were+doing

  When my husband was going into the dining room this morning, he dropped some coins on the floor.

  Their father was watching TV while?they were having dinner.

  ★变疑问句将be动词移到句首

  Was their father watching TV while?they were having dinner.

  ★变否定句在be动词后面加 not

  Their father was not?watching TV while?they were having dinner.

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