see 后面跟that 从句，可以表示“保证，务必”之意，相当于make sure，多用于祈使句。例如：

See that you're coming early tomorrow. 明天一定早点来!

《21世纪大英汉词典》

See that you take care of him. 一定要照顾好他。

来自柯林斯例句

I'll see that it gets round that you've arrived. 我一定保证让大家知道你到了。

来自柯林斯例句

We test each one to see that it flies well. 我们对每架飞机都会进行测试，以确保其飞行性能良好。

来自柯林斯例句

We must see that there is no gap in our defence. 我们必须确保我们的防御没有漏洞.

来自《简明英汉词典》

See that the door is locked before you go to bed.  睡觉前切记把门锁上。
Please see that these parcels are sent off at once.  请务必把这些包裹立即寄出。
See that none of the guests are neglected.  千万别怠慢了客人。
It is important to see that everything goes well.  重要的是确保一切顺利。