当我走着的时候，我看到杰克在冰面上向中间的鸭子跑去，然后他掉进了水里，爬不出来。

As I was walking, I just saw Jack running onto the ice towards the ducks in the middle, and then he fell into the water and couldn't climb out.

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我看到杰克走进他爸爸的办公室。

I saw Jack get into his father's office.

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我看到杰克后马上就把书给他了。

I gave that book to Jack immediately I saw him.

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