major的动词造句

major的动词造句？

English majors would be asked to explore the roots of language.

英语专业的学生会被要求探究语言的根源。

2.

His major is the hardware of a computer.

他的专业是电脑硬件。

3.

This is the one major drawback of the new system.

这是新系统的一大弊端。

4.

He played a major role in setting up the system.

他在建立这个系统的过程中扮演了主要的角色。