He has eaten nothing today. 他今天什么也没吃。(对现在的影响或结果:他现在一定很饿。)
2.未完成用法(持续性用法):该用法的现在完成时表示一个过去发生的动作并未在过去完成,而是一直持续到现在,并且有可能继续下去(也可能到此结束)。如:
How have you been? 你近来怎样?
She has been a teacher for 20 years. 她已当了20年的老师。
How long have you lived here? 你在这里住了多久了?
They have been married for ten years. 他们结婚已经10年了。
Ive known her for a long time. 我认识她很长时间了。
注:除以上用法外,现在完成时还可表示过去的重复动作甚至将来动作。如:
He has always gone to work by bike. 他总是骑自行车上班。
Ill go to bed when Ive finished my homework. 我做完作业后就上床睡觉了。
三、注意通常连用的副词
现在完成时通常连用的副词有already, never, ever, just, before, recently等。如:
We have finished our work already. 我们已经完成了工作。
He has never driven a car before. 他过去从未开过车。
Have you ever been a teacher? 你当过教师吗?
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