Question

It once throught his _____she became interested in American culture . A.influence that B. influence

请说明一下理由
It once throught his _____she became interested in American culture . A.influence that B. influence which C. influential that D.effect which

Answer 1

答案：A.

翻译：曾经是通过他的影响，她才变得对美国/洲文学感兴趣的。

解释：此题考查强调句型的用法。
1. 强调句型结构如下：It is/was + 被强调部分 + that + 句子未被强调部分。（楼主题目漏打了个was）
其特点是：去掉it is/was和引导词that之后，剩下部分可以构成一个完整的句子（有时需要调整句序）。
2. 此题做如上变化后，变为：
Once through his influence she became interested in American culture.
= She became interested in American culture once through his influence.
该句就是一个完整的句子，被强调部分是状语once through his infuence.
3. BD的引导词which不对，它不能用于强调句型；
C错在influential，它是形容词，不是名词，不能做介词through的宾语。

Answer 2

是不是 once 改成 was
It was throught his influence that she became interested in American culture.
正是因为受他的影响她才对美国文化感兴趣的
这是个强调句哈 It 。。。。。。。。。 that 。。。。
that不可省略