His parents make him ______his homework for two hours every day.这里为什么填do而不是does?

问题描述:

His parents make him ______his homework for two hours every day.这里为什么填do而不是does?
我知道是make sb.do sth.do必须是原形吗?

make sb do,make后面要加动词原形,所以用do