I started to learn the piano 2 years ago. → I have learned the piano for 2 years.

I began reading this book when I was a child. → I have been reading this book since I was a child.

I haven’t seen him for 4 weeks. → It has been 4 weeks since I last saw him.

It is 6 months since I last went shopping. → The last time I went shopping was 6 months ago.

The last time they went to the cinema was 3 months ago. → They haven’t gone to the cinema for 3 months.

I have never known the information about the news before. → This is the first time I have known the information about the news.

He has never seen such a beautiful girl before. → This is the first time he has seen such a beautiful girl.

When did you have it? → How long have you had it?

This is the first time I had such a delicious meal. → I haven't had such a delicious meal before.