英语 as引导的定语从句当先行词被such 修饰时用as引导定语从句.即 such...as .那么,such .as 能改成so.as么?如这个句子It's such a difficult problem as nobody can work out.能改成 It's so difficult problem as nobody can
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英语 as引导的定语从句当先行词被such 修饰时用as引导定语从句.即 such...as .那么,such .as 能改成so.as么?如这个句子It's such a difficult problem as nobody can work out.能改成 It's so difficult problem as nobody can
英语 as引导的定语从句
当先行词被such 修饰时用as引导定语从句.即 such...as .那么,such .as 能改成so.as么?
如这个句子
It's such a difficult problem as nobody can work out.
能改成
It's so difficult problem as nobody can work out.
或名词用复数
They are such difficult problems as nobody can work out.
英语 as引导的定语从句当先行词被such 修饰时用as引导定语从句.即 such...as .那么,such .as 能改成so.as么?如这个句子It's such a difficult problem as nobody can work out.能改成 It's so difficult problem as nobody can
1.相关语法规定如下：当先行词被such/so/the same/as修饰时,定语从句的关系代词一般使用as.
不过,有时候the same修饰先行词时,定语从句的关系代词也可以使用that.
2.所以,such...as改成so...as是可以的,但是必须要注意两者的区别.
such可以直接修饰名词；
而so只能修饰形容词/副词,当其修饰的形容词修饰先行词时,才可以用so.as来引导定语从句.
3.所以不能直接改正,必须有所变化才行.
楼主的例句必须变成：
It's such a difficult problem as nobody can work out.
= It‘s so difficult a problem as nobody can work out.
如果是复数problems,只能用such,不能用so.
4.两者区别和相似之处如下：
1）such + 形容词 + a/an + 可数名词单数 = so + 形容词 + a/an + 可数名词单数
2）so many/few + 可数名词复数；
such + 除many/few之外的形容词 + 可数名词复数；
3）so much/little + 不可数名词
such + 除much/little之外的形容词 + 不可数名词
最后一个例句中使用了可数名词复数problems,因为形容词是difficult,不是many/few,所以只能用：They are such difficult problems as nobody can work out.
不能写成：They are so difficult problems as nobody can work out.
不能，因为such是形容词，它在这里是修饰名词problem的，而so是副词，要修饰形容词和其他副词
引导的原因状语从句：
so+形容词+a/an+名词单数+that从句
=
such+a/an+形容词+名词单数+that从句