关于wonder用进行时的问题

'I was wondering' can be used to make indirect polite requests. For example: 'I was wondering if I could borrow your book.' 'I was wondering if you could drive me to the airport.'

'I wonder' is not used for indirect requests. It is usually used to express your thoughts, such as 'I wonder if he would let me borrow his book.' 'I wonder what happened.'

'I'm wondering' is used like 'I wonder' but denotes the present progressive, such as 'I'm wondering what to do next.'

链接：https://ell.stackexchange.com/questions/80410/i-was-wondering-vs-i-am-wondering-vs-i-wonder

## 至于end是否就要等计划完成，当然不是。计算机程序猿在调试程序时，中途结束该程序，就是end the program. 非常普通的用法。

## attend是短暂动词还是延续性动词？

你自己加一个比如for ten years放其后试试，也就知道了。