worth 用法
worth1 be worth something
a) to have a value in money:
The house must be worth quite a lot of money now.
One of the pictures is worth ￡50,000.
Do you know how much the ring is worth?
This art collection is worth a fortune (=worth a very large amount of money).
be worth nothing/not be worth anything
It's a very old machine so I shouldn't think it's worth anything.
b) to have money or possessions that have value:
I've heard that he's worth over $2 million.
The man who founded the company must be worth a fortune.
2 be worth (doing) something
a) used to say that something is interesting, useful, or helpful:（主动表被动）
A lot of the small towns in the area are definitely worth visiting.
The film is well worth seeing.
worth a trip/visit etc
The local museum is worth a visit.
b) used to say that someone should do something because they will gain something from it
it is worth doing something（结构上类似于worthwhile用法，但词类不同，成分不同）
It's worth checking the details of the contract before you sign it.
It's well worth getting there early if you want a good seat.
be worth the time/effort/work
It was a great evening, and definitely worth all the hard work.
3 be worth it
informalused to say that you gain something from an action:
It was a lot of hard work, but it was worth it.
4 be not worth it
informalused to say that you do not gain anything from an action:
I thought about trying to talk to him about it, but decided it wasn't worth it.
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