aswhile的區別和用法

I was eighteen when I got my driving license.

我拿到駕照時才十八歲。

She was twenty-one when she got married.

她結婚時才二十一歲。

I loved history when I was at school.

我上學時喜歡歷史。

when she came into my room I was just reading a book.

她走進我房間時，我正在看書。

Sorry, I was out when you called me.

對不起，你打電話來的時候我出去了。

When I got to the airport, the guests had left.

當我趕到飛機場時，客人們已經離開了。

When he had finished his homework, he took a short rest．

當他完成作業後，他休息了一會兒。

Why do you want a new job when you have got such a good one already？

你已經找到如此好的.工作，為何還想再找新的？

You shall borrow the book when I have finished reading it.