Iceberg2013
1.a waste of time（注意：waste是名词）2.idle away one's time例句：My father scolded me, saying I shouldn't idle my time away. 我父亲训斥我，说我不该浪费时间。3.have nothing to do /sit around例句：Some people are sitting around while others are doing all the work.有些人坐着无所事事, 而另一些人却在干所有的工作。
