1.I wasn't back to the village many years ago

⇒ I haven't backed to the village for many years.

2. When did your father plant these trees?

⇒ How long has your father planted these trees? 

3.Perter started emailing to me last year.

⇒ Perter has started emailing to me since last year.

4.We haven't received any letters from him since last christmas

⇒ The last time we received his letters was last Christmas.

5.Have you ever talked to him before?

⇒ Is this the first time you have talked to him?

1. I haven't back to the village for many years.

2. How long is it since you father planted these trees?

3. Peter has emailed me since last year.

4. The last time we received letters from him was in last christmas.

5. Is this the first time you have ever talked to him?

- $Answered$ $by$ $thieukhue$ -