what can you teach me?
I‘m a teacher
I teached English last year.
I'm teaching math now.
I have been teaching English for 7years
I will have been teaching English for 8 years by 2013.
I had been teaching English for 6years by 2011.
只能是时态不同了
what can you teach me?
I‘m a teacher
I teached English last year.
I'm teaching math now.
I have been teaching English for 7years
I will have been teaching English for 8 years by 2013.
I had been teaching English for 6years by 2011.
只能是时态不同了