(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。