是because what还是because of what

是because what还是because of what

请看下面的这道题：

Sometimes our opinions differ _______ what we choose to observe and how we deal with what we’ve observed

A. which B. since

C. because D. because of

【分析】此题答案选D，但容易误选C，因为按英语语法习惯，because是连词，其后接句子；而because of是复合介词，其后接名词、代词或动名词等。注意：because 作为从属连词，主要用于引导原因状语从句，既然是引导一个从句，也就是说它的后面不能再连用“引导词”。如：

He was angry because we were late. 他很生气因为我们迟到了。

They can’t have gone out because the light is on. 他们不可能出去了，因为灯还亮着。

Bread is cheap in this supermarket because they bake it themselves.这家超市的面包是自制的，所以便宜。

假若一个从句已经有了自己的“引导词”，那么它前面就不宜再用 because 这个连词了。如：

She got angry because of what you said. 她哭是因为你说的话。

句中的 what 相当于 the thing that，也就是说 what you said 相当于 the thing that you said。其中 the thing 用作 because of 的宾语，而that you said 为修饰 the thing 的定语从句。

He lost his job because of how he treated his boss. 他因为对老板的态度(不好)而丢了工作。

句中的 how 相当于 the way in which，也就是说 how he treated his boss相当于 the way in which he treated his boss。其中 the way 用作 because of 的宾语，而in which he treated his boss 为修饰 the way 的定语从句。(from www.网址未加载)

结论：可说because of what…不能说because what。