in time表示及时，用于修饰句中动作发生的时间状态。如：Can we get to the station in time?我们能够及时赶到车站吗?on time虽然也与时间有关，但表示的是副词“准时”。如：The train pulled in exactly on time.列车准时进站。
in time例句
I hope we get there in time.
我希望我们及时到达那里。
She worked hard so that everything would be ready in time.
她卖力地干着，为的是一切能够及时就序。
You're just in time.
你来得正是时候。
Did you get your article done in time?
你的论文按时完成了吗？
At this point in time we just have to wait.
到这种时刻，我们只好等待了。
on time例句
They are unlikely to get here on time, I fear.
恐怕他们不大可能准时到达这里。
The bus came right on time.
公共汽车正好准时到达。
We worked like crazy to get it done on time.
我们拼命地干，好按时完成这项工作。
The work was finished on time and within budget.
工作按时完成且未超出预算。
It was a real struggle to be ready on time.
要按时做好准备确非易事。