独立主格是英语语法中必学的一项内容，在考试中经常会遇到的。关于独立主格的结构及用法，你掌握得如何呢？

小编不啰嗦了，赶紧开始下面的测试吧！！

1.I have a lot of books, half of ________ novels.

A. which  B. that   C. whom  D. them

答案：D。

解析：half of them novels 为独立主格结构，相当于 and half of them are novels。

2. ________ more and more forests destroyed, many animals are facing the danger of dying out.

A. because   B. as   C. With   D. Since

答案：C。

解析：考查“with 名词 过去分词”结构。 

3. The bus was crowded with passengers going home from market, most of ________ carrying heavy bags and baskets full of fruit and vegetables they had bought there.

A. them   B. who   C. whom   D. which

答案： A。

解析：most of them carrying...为独立主格结构，相当于 and most of them were carrying...，也可改为：most of whom were carrying。注意改动后连词 and 的使用和动词 were的使用。

4. The largest collection ever found in England was one of about 200,000 silver pennies, all of ________ over 600 years old.

A. which   B. that   C. them   D. it

答案：C。

解析：all of them over 600 years old 为独立主格结构，相当于 and all of them are over 600 years old。 

5. The cave ________ very dark, he lit some candles ________ light.

A. was; given    B. was; to give

C. being; given    D. being; to give

答案；D。

解析：第一空填 being，构成独立主格结构;第二空填不定式表目的。

好了，今天的测试题你做对了几题呢？在日常的英语学习中请大家先掌握好独立主格的结构，小编会在接下来的文章中对独立主格的作用进行讲解，请耐心等待哦。