(1) so/as/that/too/how +adj. + a/an + n.

例：He is as good a student as you. 他和你一样是个好学生。

    This is too difficult a problem for me.对我来说这是一个太难的问题。

    You can hardly imagine how clever a boy he is. 你几乎想象不到那孩子有多聪明。

(2) quite/rather/what/such/many + a/an +(adj) +n

例：She sang quite a beautiful song. 她的歌唱得很漂亮。

He was such a fool as to believe what she said.

他是这样的一个笨蛋以致于相信了她说的话。

(3) all/both/half/twice the + n

例：All the students in her class like her very much. 她班上所有的学生都喜欢她。