语法

一、确定信息和不确定信息做宾语

确定信息作宾语
  • I saw that the rabbit ate a carrot.
不确定信息做宾语
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1、除了某些介词参与的情况,从句的引导词基本都在从句的开头,其他词则正常。
2、whether、where、when、how不是疑问代词,不能再后面加does

二、引导词that的省略

that一般可以省略(其他的引导词不能省略)
  • I know that the rabbit eat a carrot.
  • I know the rabbit eat a carrot.
that不能省略的情况
  • I didn’t know that the rabbit ate carrot and that you saw it. 两个宾语,如果两个that都去了,句意就会发生改变
  • I know, just like you do, that the rabbit ate the carrot. 插入语,如果去掉that,不能反应过来时从句,则会被认为是有语病

三、某些词后的宾语从句

表达某种意见时会用到宾语从句,
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四、主从时态一致

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五、be + 形容词 + that

这个结构的归类有争议,宾语从句,同位语从句,状语从句;这里更偏向于归类为宾语从句
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