那个what/how/when是什么意思
追答是后边可以加从句··
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~、、
追答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 of
Please 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