1。你去过上海吗? 不,从没有

2。你做完作业了吗? 不,还没有

3。他还没有看完这本书

4。火车还没有开

5。你在北京住了多上时间了? 七年

6。现在凯特在哪? 他在伦敦

7。我找不到手表了,我想它已经丢了

8。你以前见过他吗? 是的

  Have you been to Shanghai? No,never。

Have you finished (doing) your homework? Not yet。

He hasn't finished reading the book。

The train hasn't started。

How long have you been living in Beijing? 7 years。

Where's Kate now? She has been in London。

I can't find my watch。 I think it has been lost。

Have you ever seen him? Yes。

发生在过去但状态或其结果或影响持续到现在的动词时态,构成:have/has+done/been doing简单翻译例句如上,大多数翻译都是。。。。加已经。

是从过去到现在并将持续下去的