1、名词作主语
The children are playing a game on the playground.
孩子们正在操场上做游戏。
2、代词作主语
He is a good doctor.
他是一名好医生。
3、动名词(或短语)作主语
Drinking milk is good for your health.
4、不定式(或短语)作主语
It is easy for us to learn Chinese well.
对于我们来说学好语文很容易。
it是形式主语，真正的主语是for us to learn
1、名词作主语
China is a very large country with a long history.
2、不定式作主语
To see is to believe.
3、动名词作主语
Getting up early is a good habit.
4、形容词作主语(形容词前必须要带定冠词the)
The old should be taken good care of.
5、数词作主语
One is a small number.
6、代词作主语
We are very happy.
※7.主语从句作主语
That he finished the work in such a short time surprised us.
