it was years before i had seen her 和it wasyears since i had seen her是相等吗

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it was years before i had seen her 和it wasyears since i had seen her是相等吗
it was years before i had seen her 和it wasyears since i had seen her是相等吗

it was years before i had seen her 和it wasyears since i had seen her是相等吗
不相等.
第一句的意思是,很久之后我才见到她
第二句意思是,很久之前我见过她

it was years before i had seen her 和it wasyears since i had seen her不相等。
it was years before i had seen her意思是：“在我看见她【以前】许多年”
it was years since i had seen her意思是：“自从我看见她【之后】许多年”
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it was years before i had seen her 和it wasyears since i had seen her不相等。
it was years before i had seen her意思是：“在我看见她【以前】许多年”
it was years since i had seen her意思是：“自从我看见她【之后】许多年”
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看完就知道了：
辨析before和since
先看下面两道试题：
1、What was the party like?
Wonderful .It’s years I enjoyed myself so much. (NMET93)
A.after B.before C.when D.since

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看完就知道了：
辨析before和since
先看下面两道试题：
1、What was the party like?
Wonderful .It’s years I enjoyed myself so much. (NMET93)
A.after B.before C.when D.since
2、She was so interested in the book that she had read it for three bours she realized it.
A.when B.sunce C.before D.until
在1题中，上下文提供人语言环境是：说话个方想询问另一方对晚会飞感受，另一方表达的一丝丝“晚会很精彩，自我上次玩得很开心以来已有好几年了。”，时间的计算式从since从句飞完成或状态结束时算起。因此应该选择D。
在2题中，上下文透露的语言信息是：在她意识到时间问题之前，时间已不知不觉飞过了三个小时。也就是说三小时之后从句中的动作才开始。答案应该选择C。 一、若表示“还未……就……”“不到……就……”“……才……”，“趁……还没来得及”是，需用连词before,此时从句中的谓语动词不能用否定时。如We had sailed four days and four nights before we saw land.我们航行了四天四夜才看到陆地。We hadn’t run a mile he felt tired.我们没跑到一英里，他就累了。Please write it down before you get in a word, had measued me.我还没来得及插话，他就给我量好了尺寸。Before they reached the station, the train had gone.他们(还没)到火车站之前，火车已开走了。
二、在“It+be+一段时间十before从句”句型中，如果主句为一般将来时，从句常用一般现在时；如果主句为一般过去时，从句则常用一般过去时。如：
1、It will be six years before we again.
A.will meet B.meet C.met D.have met (答案为B)
2、It not long before he told us about the af-fair.
A.will be B.is C.had been D.was (答案为D)
除此以外，“It will be + before sb. does”还表示“多久之后才……”。如：It will be half a year before I come back.我半年后才回来。It won’t be long before we meet again.不久，我们又会见面的。
三、在“It+be+一段时间+since从句”句型中，如果主句为一般现在时或现在完成时，从句常用一般过去时；如果主句为一般过去时，从句则常用过去完成时。如：They asked me to have a drink with them. I said it was at least ten years since I a good drink. (MET’88)
A.had enjoyed B.was enjoying C.enjoyed D.had been enjoying (答案为A)
四、在“It is+时间+since从句”句型中，时间的计算根据since从句中的谓语动词的情况进行推算，瞬间动词(如：break out,join,cach等)是从动作发生时算起，延续行动词，(如：smoke,work,live,have等)是从动作结束时算起。如：It is three years since the War broke our. (从break out 动作发生时算起)战争爆发以来，有三年了。It is three years since she was in our class.她离开我们班哟三年了。It is five years since I (have)smoked a cigar.(=since I stopped smoking a cigar.) (从smoke动作结束时算起)我不吸烟有五年了。如果译成“我不吸烟有五年了”，应为：It is five years since I began to smoke.
五、综合练习
1、The next moment, she had time to realize what was happening,she was hit over the head.
A.when B.before C.since D.as
2、—Why didn’t you try your best to get on the bus?
—I tried to,but I could,it started moving.
A.until B.when C.before D.after
3、Mr.Smith is in good health now for it is quite a long time he smoked.
A.until B.since C.before D.when
4、—It is a long time I saw you last.
—Yes, and what a pity is since it will be a long time we see each
other again.
A.before,since B.since,before C.when,when D.since,when
5、We drove abroue about 200 kilometers we got to the town.
A.before B.since C.until D.while
6、It’s ten years the scientist set out start his work of discovery the
valuable chemical.
A.before B.that C.since D.when
7、A man escaped from the prison last might. It was a long time the guards
discovered what had hap-pened.
A.before B.until C.since D.when
(答案：1、B 2、C 3、B 4、B 5、A 6、C 7、A)

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It was three years before he came it was 7 years before they got married.翻译 it was thirty years until they were able to reunite 能代替 it was thirty years before they were吗 英语翻译It stood for one thousand hundred years before it was destroyed by an earthquake. it was 3 years before i had graduated from the university 对吗?也就是it is 过去式 before 过去完成时 请问it be…before…的句型用法…比如说it was 3 years before he … it was 和it is +before这两个的时态要注意吗it is 3 years before they.和it was 3 years before they.从句主句后面的时态怎么用 It took them nearly 3 years ( before )the new stadium was completed.为什么不用until It was a long time ____ we had had a wonderful time together seval years before it was ten years _Miss lin returned to jinanA that B before C when D since it was many years before american women were given the rights to vote翻译下, It was many years before american women were given the rights to vote翻译, it was i met miss white in hangzhou A:three years before B:three years ago that C:three years whenD:three years ago since it was years before i had seen her 和it wasyears since i had seen her是相等吗 it was three years i met miss white in hangzhou A:three years before B:three years ago thatC:three years when D:three years ago sinceit was i met miss white in hangzhou 英语语法：It was quite a few years before I quited the job.而此句before若改为since 则was要改成is ,为什么? Six years has passed before I realize it.It was 12 o'clock before I realized it.这两句的区别是什Six years has passed before I realize it.It was 12 o'clock before I realized it.第一句I realize it第二句I realized it.一个用现在时,一 It was two years later that ...与It was two years before...的区别是?两句那句是强调句式?为何会有这样的区别?before与later的用法有何不同?