11
1 How long is it since he started teaching English

2 How long ago did he start teaching E

 11How long …………have he taught at this secondary school…………………………?

 12This is the first time ………………… I have chatted on I-phone………………………………..

 13She hasn’t ………………met him since Friday.…………………………………………………….

 14The last time …………the children waS IN hn 2 MOTHS AGO………………

12. When did they begin learning Japanese?

->how long have you leaned Japanese?

13. I have never chatted on I-phone before.

-> This is the first time i have chatted on I-phone

14.  She last met him last Friday.

 -> She hasn’t met him since last Friday.

15. The children haven’t been in Hai Phong for 2 months .

-> The last time The children were in Hai Phong was 2 months ago