同学你好，该知识点来自沪江网校《新概念英语2、3册连读【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学你好~
see作为一个动词，有多种用法和结构。下面是一些常见的用法：

See + do：表示观察到或目睹某个动作或事件。
I saw her run across the street.
Did you see the bird fly away?

See + doing：表示观看某人正在进行的动作。
I saw him dancing at the party.
She saw her friend studying in the library.

See + done：表示观察到或知道某事已经完成。
I saw the job done and was satisfied with the result.
They saw the project completed on time.
这三种结构的区别在于对动作或事件的不同描述方式。第一种是观察到或目睹某个动作的进行，第二种是观看某人正在进行的动作，第三种是观察到某事已经完成。

此外，see to表示照顾、负责或处理某事。它的意思是确保某事得以完成或负责某项任务。

He saw to it that all the arrangements were made.
The manager will see to the repairs of the equipment.

祝同学学习进步~