主语表明这句话说的是谁和什么，主语主要由名词、代词或相当于名词的单词，短语或从句充当。精品学习网小学频道为此提供了小学生必知的英语语法，希望可以作为大家复习的参考！

小学生必知的英语语法：主语

一、名词作主语

David arrived last night.

大卫昨晚到达。

Pride goes before a fall.

骄必败。

二、代词作主语

Who is speaking, please?

(在电话中)请问您是谁?

That's OK.

这没问题。

三、数词作主语

Two will be enough.

两个就够了。

Two-thirds of the workers are women.

三分之二的工人是女工。

四、ing形式作主语

Skating is good exercise.

溜冰是很好的运动。

Looking up all the new words in the dictionary took him a lot of time.

从字典里查所有的生词花费了他许多时间。