简单说，名词化即是动词或形容词被用作名词的现象。比如动词转成名词：discovery->discovery， move->movement， refuse->refusal，又比如形容词转成名词：careless->carelessness， difficult->difficulty， intense->intensity。那么什么情况下，我们需要进行名词化呢?
A 谓语动词的宾语部分
原句：I do not know either what she meant or what he intends.
名词化：I do not know either her meaning or his intentions.
B 结合被动形式
原句：If people decide without enough persuasive information，...
名词化：If a decision is made without enough persuasive information，...
C 取代诸如从句中“the fact that”的用法
原句：The fact that I denied what he accused me of impressed the jury.
名词化：My denial of his accusations impressed the jury.
更好的名词化：a. When I denied his accusations， I impressed the jury.
b. In denying his accusations， I impressed the jury.