英语I复习t+be+时间+从句归纳[下学期]

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名称 英语I复习t+be+时间+从句归纳[下学期]
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科目 英语
更新时间 2006-08-07 12:06:00

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[英语]It+be+时间+从句归纳
历年高考单选题中常常出现It +be+时间+从句的这类句型,先看几道高考题:
例1:It is almost five years ________we saw each other last time.(05北京)
A. before   B. since   C. after   D. when
正确答案:B 我们已经有5年没见面了。
例2:-Did Jack come back early last night?
  -Yes. It was not yet eight o‘clock ________he arrived home.(2005福建24)
A. before   B. when   C. that   D. until
正确答案:B 他回家时还不到8点。
这类考题出现频率较高,考生又极易混淆,在复习中做出归类非常必要:
1.It is/has been + 时间段 + since + 一般过去时
例1:It is/has been 10 years since he came here.这类句型可转化为:
=Ten years has passed since he came here.
这一句型可扩展为:It was+时间段+since(从句用过去完成时)
例2:It was years since he had arrived in China.(过去是+since+过去完成时)
需要注意的是since从句的谓语动词一般是非延续性动词,但有时也可用延续性动词或表示状态的词,此时需要注意句子的翻译:
例3:It is three years since she came to our class.她来我们班已经有三年了。
It is three years since she was in our class.她离开我们班已经有三年了。
2.It + was + 时间点 + when clause(从句谓语用一般过去时)
will be+时间点+when clause(从句谓语用一般现在时表将来)
例1:It was already evening when he came back.当他回家时已经8点了。
例2:It will be midday when they get home.当他们到家时将是中午。
3.It + will(not) be + 时间段 + before + 现在时
was(not)+时间段+before+过去时
例1:It will be another year before he comes here.
例2:It was some time ______we realized the truth.(2005山东24)
A. when   B. until   C. since   D. before
正确答案:D。过了一段时间后我们才了解了真相。
该句型中before前常用时间段,表示“…之后才…”“在…之前就…”;有时before前也可以用时间点,此时突出表示动作的变化。试比较:
例3:It was evening before we reached the little town of Tailstocks.
当我们到达Tailstocks时已经黑了。(到达前天还没有黑)
4.It/This is + the + 序数词 + 时间 + 定语从句(从句用完成时)
例1:It is the first time (that) I have been here.(定语从句)
该句型可扩展为:It was+序数词+时间+定语从句(从句用过去完成时)
例2:It was the second time he had been out with her alone.
例3:It’s the second time you ________late this week.
A. arrive   B. arrived   C. have arrived   D. had arrived
正确答案:C。这是这个星期你第二次迟到了。
5.It is + (high)time + that + did(虚拟语气)
例1:It is (high) time (that) we stopped pollution.
其中that引导得从句中也可用should +V(原型)
例2:It is (high) time (that) you came/should come here.
写作中表示建议时也常可用这类句型。
例3:It‘s high time we took measures to solve this problem.
注意应将以上5种句型与强调时间的强调句型的区别:
6.It be + 时间(被强调部分) + that
例1:It was at 6 o’clock that we heard the noise.
例2:It was 3 years ago that he joined the army.
最简单的判断方法是:当表示时间的词前有介词或者后有副词时,一定是强调结构,必用that。
试比较下面句式与强调句的不同之处:
It was already ten o‘clock when he arrived.
It is ten years since I met you last.
It was quite some time before he found the elephant at all.
以上几句中时间前无介词后没副词故不是强调句型。
《动手练一练》:
1.It was not until 1936________basketball became a regular part of the Olympic Games.
A. that   B. when   C. which   D. then
2.It will not be ________we meet again.
A. long before B. before long  C. soon after  D. shortly after
3.──He was nearly drowned once.(02’春招)
──When was________?
──________was in 1998 when he was in middle school.
A. that; It   B. this; This   C. this; It   D. that; This
4.It was evening ________we reached the little town of Winchester.(04天津)
A. that   B. until   C. since   D. before
5.Scientists say it may be five or six years ________it is possible to test this medicine on human patients.(04福建)
A. since   B. after   C. before   D. when
6.It was ______I met Mr. Smith in London.
A. many years that   B. for many years since
  C. since many years ago when   D. many years ago that
7.-What was the party like?
-Wonderful. It‘s years _____I enjoyed myself so much.
A. after   B. before   C. when   D. since
8.It was about 600 years ago ___the first clock with a face and an hour hand was made.
A. that   B. until   C. before   D. when
(Keys:AAADCDDA)