since用法

时间概念的Since用法归纳

时间概念的Since 用法归纳江苏省泰州第二中学韩宏华一、副词用法：可翻译“后来、以来、以前、以后、其后、从那时以后/ 从此”等，还可与其它词构成词组表示类似的时间意思。1．与完成时态连用等于before, eg ：I haven’t seen him since. （我从此没有见过他。）He said that his father had died five years since. ( 他说他父亲5 年前就死了。) 2．与过去时态连用等于ago, eg ：It happened many years since. ( 此事是数年前发生的。) His father died five years since. (5 年前他父亲就死了。) 3．构成的词组均用于完成时态, eg: a) He went to Nanjing in 1980 and has lived there ever since (=ever before 此后一直). b) We have seen that film long since (=long before 很久以前). c) Our great country has never since (=never before 空前) been so prosperous, as it is today. 二、连词用法：可翻译“自从… 的时候起、从此、从… 以来、… 以后”等，引导时间状语从句，区分如下：1．主句用现在完成时态，since 从句用短暂动词的过去一般时态表示从句的动作结束：We have both changed since we parted. ( 自从我们分手以来，我们都有了变化.) 2．主句用现在完成时态，since 从句用be 动词过去一般时态表示从句的状态结束: He has never been to see me since I was ill. ( 自从我病好以来, 他从未来看望我.) 3．主句用现在完成时态，since 从句用be 动词的现在完成时态表示从句的状态延续: He has never been to see me since I have been ill. ( 自从我生病以来, 他从未

来看望我.) 4．主句用现在完成时态，since 从句用延续动词的现在完成时态表示从句的动作延续: 5．He hasn’t seen me since I have lived here. ( 自从我住在这里以来, 他还没有看望过我.) 6．主句用现在完成时态，since 从句用延续动词的一般时态表示从句的动作结束: He hasn’t seen me since I lived here. ( 自从我不住在这里以来, 他就没有看望过我.) =He hasn’t seen me since I left here. 三、句型用法：１．主句用现在完成时，从句用一般现在时：I have done translation since I know English. ２．主句用系动词的一般现在时，从句用一般过去时：He feels much better since he took some medicine. ３．主句用现在进行时，从句用一般过去时: I am walking to work since my bike broke down. ４．It is + 时段＋since 从句（短暂动词的过去式）It is two years since he joined the army. ５．It was + 时段＋since 从句（短暂动词的过去完成式）It was four years since we had parted. ６．It has been+ 时段＋since 从句（短暂动词的现在完成时）It has been about five months since I have heard from him. ７．It is + 时段＋since 从句（延续动词的现在完成时）It is a long while since I have been at home. ( 我自从离家已有好长一段时间了。) 四、介词用法：与from 和after 的区别：１．与from 的区别是：since 表示从一定的时候起直到现在或过去的某时间为止依然继续着的事情为起点，用于完成时态；from 仅表示事情的起点，多用于现在时、过去时、将来时。如：From that hour a change seemed to come over him. You have been there ever since last night. ２．与after 的区别是：

since 表示从一定的时候起直到现在或过去的某时间为止依然继续着的意味，用于完成时态；after 无此含义，常用于过去时态。如：Since my departure I have heard nothing. After my departure I heard nothing from him. He died after a few days. 小结：Prep: 过去的时点：yesterday （… ）last…(week/month/year/term ／…) Since 过去的年份：1909/2006 时段＋ago ：three days/ten years/… Conj: 时间状语从句（常用过去式）+ 主句五、相关练习：１．我到达才一个星期。２．自上次见到你已有好几年了。３．自从毕业以来我们就一直是朋友。４．他离家后有一段时间很不愉快。５．我今天上午10 点以后一直都在这里。６．自从我三年前去过那儿以后，那里已经完全变样了。７．自从战争以来，她一直只能用土豆和鸡蛋养活全家。８．我早就原谅了他的所作所为。Reference answers: 1. It is just a week since we arrived. 2. It is/was years since I saw/had seen you.

3. We’ve been friends ever since we left school.

4. She was very unhappy for a while after leaving home.

5. I’ve been here since 10 o’clock this morning.

6. The place had completely changed since I went there three years ago.

7. Ever since the war she’s been able to feed a whole family with a few potatoes and eggs.

8. I’ve long since forgiven her for what she did.