waste既可用作及物动词，也可用作不及物动词。用作及物动词时还可以使土地（建筑物）等荒芜、废弃，用作不及物动词时多表示国力变衰、体力消耗或某物减少等，这时主动形式有被动意义。下面让我们看一下waste的过去式和过去分词吧。
过去式和过去分词
过去式：wasted
过去分词：wasted
现在分词：wasting
第三人称单数：wastes
相关例句
I wasted an entire day on it.
我为此浪费了整整一天。
We had a wasted trip，they weren't in.
我们白跑了一趟，他们不在。
Time spent on reconnaissance is seldom wasted.
花在侦察上的时间是不会白费的。
I'm afraid you've had a wasted journey.
对不起，你是白跑了一趟。
Tom wasted no time in telling me why he had come.
汤姆马上告诉了我他来的原因。
Time may also be wasted in purposeless meetings.
时间也可能浪费在毫无意义的会议当中。
He wasted no time with social niceties.
他没有在社交礼仪细节上浪费时间。
It was a wasted opportunity.
这是一个错失了的良机。
The fields were wasted by a long drought.
那些田地由于久旱而荒芜。
If we stop there, all our previous efforts will be wasted.
如果就此止步，就会前功尽弃。
