a waste of+名词 表示浪费什么什么
a waste of time 浪费时间
a waste of money 浪费金钱
例句：
I think watching TV every evening is a waste of time.
我认为每天晚上看电视是浪费时间。
Don't you think it's a waste of effort to argue about that small thing?
难道你不认为为了那件小事争吵是浪费力气吗？
末尾音乐：
same girl
