a tried friend的用法和样例：
- I asked him to have a try, but he hung back.
- I just don't see why we shouldn't give it a try.
- I know it's hard. Just give it a try.
- Do you want to have a try of this new rouge?
- You should have a try, don't swallow anybody.
- I've never played it, but I like to give it a try.