为什么有的宾语从句引导词只能用that

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为什么有的宾语从句引导词只能用that
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为什么有的宾语从句引导词只能用that
为什么有的宾语从句引导词只能用that

为什么有的宾语从句引导词只能用that
宾语从句通常有两种,1)动词+宾语从句;2)形容词+宾语从句
一般来说,第二类宾语从句连词基本为that,如:be sure that...
学习第一类宾语从句时,通常老师都会让学生练习直接引语变间接引语.当直接引语是陈述句时,间接引语的连词为that.
例如:
直接引语:Tom said," I will read it."
间接引语:Tom said that he would read it.

that在宾语从句中不充当任何成分没有任何意义,简单来讲就是个装饰作用,所以我们往往在宾语从句中可省掉that
例如:I told you (that) we won the game.
(that) we won the game这个部分是宾语从句,整个从句是完整句,that在其中没有任何作用
I know who you are.
who you are这个也是...

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that在宾语从句中不充当任何成分没有任何意义,简单来讲就是个装饰作用,所以我们往往在宾语从句中可省掉that
例如:I told you (that) we won the game.
(that) we won the game这个部分是宾语从句,整个从句是完整句,that在其中没有任何作用
I know who you are.
who you are这个也是宾语从句,但是who就不能省略

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引导宾语从句的连词:1。从属连词:that,if ,whether,
2. 疑问代词:who, what, which, whose,
3. 疑问副词:when, where, how, why 等。
除了that 无词意外,其它都有词意。当宾语从句不用连词意思也很完整时,就可用that引导,这...

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引导宾语从句的连词:1。从属连词:that,if ,whether,
2. 疑问代词:who, what, which, whose,
3. 疑问副词:when, where, how, why 等。
除了that 无词意外,其它都有词意。当宾语从句不用连词意思也很完整时,就可用that引导,这也是为什么that可以省略的原因。如:She told us (that) she was ill yesterday.
又如:1.I wonder what he is writing to me about?
2. I can't understand why you faild.
3. I'd like to know when she will come here.
以上三个句子就不能用that引导,因为去掉that,意思不够完整。

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