问一个英语问题It's three years____i began to learn english.a.whenb.

It's over three years since I began to learn English.此处的over It ___about three years since Dean began to learn English 问一个英语问题it's imprtant (for) us to learn foreign languages wel 关于since It's almost three years____I last saw her.A.since B. I am a student in Grade Three. I began to learn English thre I began to learn English language three years before.改错? We began to learn English three years ago. we began to learn english three years ago 同义句 I began to learn English three years ago.是什么时态 想问一个英语问题i would like to ask a question of English grammar.it 句型转换she began to learn english after she entered a primary s it ( is )six years since he ( began )to learn english