Present perfect

Front

negative sentence: I / finish my project yet

Back

I haven´t finished my project yet.

Front

positive sentence: I / be to London twice

Back

I have been to London twice

Front

positive sentence: He / loose my laptop.

Back

He has lost my laptop

Front

positive sentence: She / always want to be a teacher

Back

She has always wanted to be a teacher

Front

question: He / find the lost key?

Back

Has he found the lost key?

Front

question: How long / you live here

Back

How long have you lived here?

Front

negative sentence: she /do her homework

Back

She hasn´t done her homework

Front

question: They / ever sing in public?

Back

Have they ever sung in public?

Front

question: he / ever drive a car

Back

Has he ever driven a car?

Front

negative sentence: I / never be to Mexico

Back

I have never been to Mexico.