英语翻译

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