【新课标人教版】2012届高考英语一轮复习精品学案：语法部分 第9讲 状语从句
英语语法
【完成例句】
(7)我还没到家就觉得饿了。(在到家之前就觉得饿)
I had felt hungry before I arrived home.
(8)我还没来得及向她道歉，她就离开了办公室。(在我能够说抱歉之前，她就离开了办公室)
She left the office before I could say sorry to her.
(9)还要过很久我们才能毕业。
It will be long before we graduate.
【结论4】 before 在……之前 ；还没来得及……才
【完成例句】
(10)我来上海已经4年了。
It's / has been four years since I came to Shanghai.
【结论5】 since “自从……以来”；是现在完成时的标志。
【注意】从句中延续性动词意义为否定。
例：①我当医生已经3年了。(自从我成为医生以来，时间已经过去3年了。)
It is three years since I became a doctor
②他不当医生已经3年了。
It is three years since he was a doctor.
③我父亲不吸烟已有两年了。
It is two years since my father smoked.
④我父亲吸烟已有两年了。
It is two years since my father began to smoke.
【翻译句子】
(11)我一直睡到闹钟响为止。
I slept until the clock alarmed.
(12)直到爸爸回来我才开始睡觉。
I didn't sleep until my father came back.
【结论6】until ①在肯定句中，表示动作持续“到…为止”；② 在否定句中，常与not连用，表示动作“直到……才开始”。
【翻译句子】
