短语money doesn't grow on trees 的字面意思是“钱不会长在树上”，实际想表达的意思是不要乱花钱，因为挣钱不容易。
- My daughter Claire wants a car for her 17th birthday, but I can't afford it. Money doesn't grow on trees!
- "Mum, can you give me some more pocket money?"
- "No I can't – money doesn't grow on trees, you know."
值得注意的是，短语money is no object的意思是说你有很多钱，所以钱不是问题。
- He lives in a mansion, has three sports cars and goes on holiday every month. Money is no object for him.
