问题标题:
should和oughtto的肯定、否定、疑问及其回答的形式?意义?重点?
问题描述:

should和oughtto的肯定、否定、疑问及其回答的形式?意义?重点?

杜岩回答:
  shouldshouldnotshouldigotoschool?yes,youshould.   应该(偏向于主观)   oughttooughtnottooughtitogotoschool?yes,yououghtto.   应该(偏向于客观事实)
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