一般来说,不定冠词一般应该放在名词短语的最前面。但是,有几种情况例外:
1. so+形容词+a/an+单数名词+that从句=such+a/an+形容词+单数名词+that从句。
It is so fine a day today that we can go swimming .=
It is such a fine day today that we can go swimming .
今天天气如此的好以至于我们可以出去游泳。
2.so beautiful a child类型结构
I’ve never seen so beautiful a child.
我从来没有见过这么漂亮的孩子。
He’s never again written so good a book as his first one.
他再也没有写过像他第一部书那样好的书。
3.too kind a girl类型结构
She is too kind a girl to refuse.
她说个好心肠的姑娘,不会拒绝的。
I didn’t do too good a job today.
今天我干得不太好。
4. 名词(形容词)+as/though+主语+系动词:把系表结构中的“表语”(而非be动词),提到从属连词as/though之前(而非主语之前)。此时名词前的不定冠词省略。
Child as/though he is,he knows a lot about physics.
尽管他是个孩子,但对物理知识知道得很多。(让步状语从句)
Child as/though he is, he has to make a living.
尽管他是一个孩子,他不得不谋生。(让步状语从句)
Child as he is, he knows quite a lot of things.
虽然他还是个孩子,但他懂得很多事情。(原因状语从句,此时,只能用as)