to get原因：make sure 后可以用1）宾语从句2)of/about...3)what/how/when/...to do sthmake sure .to do sth务必 ; 一定做某事如：So when an apology or a thank you is due,make sure to do so ,but be careful t...那个what/how/when是什么意思是后边可以加从句··你的句子是加动词的直接用to do 即make sure .to do sth务必 ; 一定做某事每个能不能举个例子~、、You should make sure when the train will leave . （从句都是一个用法） 你应该查明那班火车将在何时开出。加动词就是to do 已经给你例子·make sure ofPlease make sure of the time. 请把时间打听准确。make sure that Make sure that you put down every word she says.切实要记下她说的每一个字。希望帮到你