主语：动作的发起人，巡綮碣褂或是句子陈述的主体。
主语可以用下面这些东西表示：
1、名词
A foreign languageis a weapon in the struggle of life.
2、代词
Whois speaking please?
3、数词
Two-thirdsof the teachers are women.
4、动名词
Living in that island country for three monthswas an unforgettable experience for me.
5、不定式
To translate this ideal into realityneeds hard work.
6、词组或复合结构
Early to bed and early to risemakes a man healthy, happy and wise.
7、名词化的其他词类
The oldneed to be taken care of.
扩展资料
主语从句
1、that 引导的主语从句
It's not your faultthat this has happened.
2、连接代词连接副词（或whether）引导的主语从句。
When they will comehasn't been made public.
3、what等代词引导的主语从句。
What they are afteris profit. 他们追求的是利润。
4、由that引导的主语从句多放在后面， 前面用it作形式主语。
It is possiblethat I may not be able to come.
5、连接副词和连接代词引导的主语从句可以放在后面，前面用it作形式主语，但也可以放在句首作主语。
When we shall have our sports meetingis still a question.
