摘要： 不定冠词用于固定结构quite/half/rather/many/what/such a (an)+名词.so/too/how+形容词+a (an)+名词表示程度.数量或感叹等. It's too difficult a problem for him. 对他来说.这是一个太难的问题.
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用不定冠词a或an填空。
1．Maths is ________ useful subject．You can't drop it, I think．
2．It is ________ long time since we met last．
3．Tom's father is ________ artist and his mother is ________ engineer．
4．Last Sunday we had ________ good time．
5．There are only two letters in the word“us”, ________“u”and ________“s”．
6．Before he became ________ university student, he was ________ army man．
7．I spent ________ hour and ________ half writing the composition．
8．Do you have ________ answer to my question?
9．Have you got ________ ten-yuan note?
10．The car has ________ ugly colour．