as efficient a worker为什么不能说成an as efficient worker
2024-12-24 20:34:33 学考宝 作者：佚名
问题描述
George is as efficient a worker as Jack.
句中的划线部分为什么不能说成 an as efficient worker，原因是什么？期待老师的精彩解答。
老师答疑
曹老师：
通常一个名词前如果既有形容词修饰又有限定词时，限定词必须置于形容词之前。这是语法规则。但这个规则有四个例外情况，当形容词被as,so,too,how修饰，并且限定词为不定冠词a时，so/as/too/how+形容词移至不定冠词之前。其原因是这四个程度副词强调形容词，置于名词词组之首以突出强调作用。
陈老师：
George is as efficient a worker as Jack.（强调名词）
=George is so efficient a worker as Jack.(强调名词）
=George is a worker (who is) as efficient as Jack.（强调形容词）
=George is a worker as efficient as Jack.(强调形容词）
不定冠词用于固定结构quite/half/rather/many/what/such a (an)+名词或so/too/how+形容词+a(an)+名词中，表示程度、数量或感叹等.
A:quite/half/rather/many/what/such a (an)+名词
It takes half an hour to get there. 到那里需要半小时。
He's quite a famous artist. 他是个很有名的艺术家。
Many a man would welcome such an opportunity.
许多人会很高兴有这样一个机会。
What a fool he is! 他多傻啊！
It's too difficult a problem for him.对他来说，这是一个太难的问题。
I have a number of sponsored students.
Mary has a lot of money.
Tom is rather a fool.
I think Chinese is quite a useful language.
Many a student has asked that question.
The visitor left half an hour ago.
What a fine day it is!
How can you say such a thing?
B:so/too/how+形容词+a(an)+名词
We have not had so hot a day before.
Susan is as clever a girl as Anna.
That is too difficult a book for beginners.
No one knew how serious a problem it was until later.
