宾语从句

Question

能不能帮我分析下这句子成分？Please see to it that the garage is locked.特别是it有什么作用呢？

Answer 1

see to it that 是一个固定的词组，表示“努力使…；记得…，务必”，不能拆开一个个的分析。
比如：
See to it that you are here punctually tomorrow morning.
明天早上务必准时到这里来。
I will see to it that everything is ready for your departure.
我会注意准备好一切让你启程。
Please see to it that the door is locked.
请注意一下门锁了没有。

Please see to it that the garage is locked.句意是：
请记得把车库锁上。

祝您学习进步，更上一层楼！！！(⊙o⊙)

Answer 2

祈使句。
see to是谓语
it是形式宾语，指的是that后面引导的从句。

Answer 3

it引导后面得宾语从句，是形式宾语，实际指代后面得garage is locked这件事