怎么用a waste of time造句

1、It is a waste of time to do something.做某事是浪费时间。2、It is a waste of time to read such a magazine.看这种杂志真是浪费时间。a waste of……是一个固定短语，可以构成固定句型。It's a waste of……表示这是浪费……的意思。不过，It's a waste of time to do sth.一般...