they are good student 和they are good students那句正确?还是都正确?

问题描述:

they are good student 和they are good students那句正确?还是都正确?

第二句是对的,复数

主语是they,说明是3个以上的人,他们;所以后面的宾语要用复数形式,即students.
所以后面一句是正确的.
They are good students.