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。

　　例句

　　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."

　　请注意

　　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.