时间状语从句(全面掌握).doc

-_状语从句状语从句一、 什么是状语从句状语的功用：状语说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等。状语一般由副词、介词短语、分词和分词短语、不定式或相当于副词的词或短语来担当。其位置一般放在句末，但也可放在句首或句中。I didnt realize how special my mother was until I became an adult.You should have put the book where you found it. I didnt go because I was afraid.二、状语从句的分类1.时间状语从句 2.地点状语从句 3.原因状语从句 4.条件状语从句 5.目的状语从句6.让步状语从句 7.比较状语从句 8.方式状语从句 9.结果状语从句 10.伴随状语从句 常见考点： 考点一、主句与从句的时态呼应问题； 考点二、连接词的选择。 考点三、状语从句与非谓语动词之间的替换； 考点四、根据从句与主句的逻辑关系选用从属连词；思考：什么是从句？I dont know the girl in red.I dont know the girl who is playing under the tree.从句要素： 至少要有两个句子 要有引导词-_3、时间状语从句详解1.引导词引导词（1）基本类：before ,after ,when ,while ,as ,since ,till ,until ,once ,as soon as.（2）名词类：（由名词词组充当引导词）the moment ,the minute ,the second ,the instant ,(一就)every time ,each time ,the first time ,the last time （3）副词类：（由副词充当引导词）immediately ,directly ,instantly (一就)（4）句型类：no soonerthan ,hardly/scarcelywhen（一就）2.引导词具体讲解：引导词具体讲解： 当时候：It was six oclock when I got home. Sb was doing sth when 1)when 这时 Sb was about to do sth/was on the point of doing sth whenSb had just done sth when既然: It was foolish of you to take a taxi when you could walk there in five minutes.既然你能 5 分钟就走到那儿，再搭出租车真是太傻了。当时候(引导持续性持续性动作): He fell asleep while he was reading a book. 2) while 然而(用于句中) : He likes pop music while I am fond of folk music. 虽然,尽管(用于句首) While volleyball is her main focus, shes also great at basketball.当时候;随着 He smiled politely as Mary apologized for her drunken friends. 3) as 因为 You cant continue with the training as you havent recovered from the injury. 尽管 Hot as/though the night air was, we slept deeply because we were so tiredafter the long journey.正如,正像 The air quality in the city, as is shown in the report, has improved in the last two months. -_肯定句:主句的谓语动词必须是延续性动词。He worked until late into the night. 4)till, until 否定句：主句的谓语动词是非延续性动词。 7.notuntil 的倒装句式和强调句式He didnt consider having a holiday until he retired from teaching three years ago. 倒装句式：Not until he retired from teaching three years ago did he consider having a holiday. 强调句式：It was not until he retired from teaching three years ago that he considered having a holiday. 5) before 在之前,.才 We had sailed four days before we saw land. 还没来得及 Before I could get in a word, he had measured me. 8.It was +时间段+before sb did sth(才) 9.It will be+时间段+before sb does sth (才) It was two weeks before we met again.两周之后我们才见面。It will be two weeks before we meet again. 我们再过两个周才能见面。6) since 自从 She has been working in this factory since she left school. 既然 Since Babara is no longer my wife, Im no longer responsible for her debts. 既然芭芭拉不再是我的妻子，我也不用再负责她的债务了。 It is/ has been +段时间+ since sb did sth （自从以来多长时间）7) 关于一就的表达方式：as soon as, immediately, directly, instantly, the moment, the minute, the instant, no soonerthan, hardly/scarcelywhen, once 一就Hardly had I got home when it began to rain. 我刚一到家就开始下雨。No sooner had I got home than it began to rain.8)每次；每当;下次等表达方式：every time, each time, next time, the last time, any time, all the time 等名词短语用来引导时间状语从句。 Every time I was in trouble, he would come to help me out. 9) 几个极易混淆的时间状语从句： 10.It was +时间点+when（当.的时候时间是.） It was 5 am when we arrived at the village. 11.It was/will be+时间段+before(没过就过了才) It was/will be two weeks before we met/meet again. 12.It is /has been +时间段+since（自从以来有） It is/has been 3 years since we last met.突破点：一看 be 动词的时态，二看时间段还是时间点。-_13.时间状语从句和强调句的区别时间状语从句和强调句的区别强调句的句型是：It is (was) 被强调部分+ that (who) + 句子其他部分It was seven o'clock when we reached the station.（状语从句）=It was “at“ seven o'clock “that“ we reached the station.(强调句，定语从句）强调句和时间状语从句的区别是：时间状语从句可以去掉，不影响句子的完整性。而强调句 that/who 引导的句子是不能去掉的，否则句子就不完整了，单独的“It was at seven o'clock”是错误的。(四)It is(was)+时间点+that 的强调句型 强调句仅是形似，与“when”句型的比较很明显：1. 强调句时间点部分通常带有介词或后面有副词；2. 去掉 it is(was)that 之后，句子整合成一个完整的句子。 Eg:It was in the morning that I was robbed in the street. （删除后还原：I was robbed in the street in the morning.） =It was this morning that I was robbed in the street. It was at 7:00 that I met Tom this morning. （删除后还原：I met Tom this morning at 7:00.）=It was 7:00 when I met Tom this morning14.关于时间定语从句和时间状语从句的区别关于时间定语从句和时间状语从句的区别时间状语从句和定语从句的区别其实跟上面说的是一样的，强调句型其实就是一种特殊的定语从句。本身最简单的表达法是：We reached the station at seven o'clock.强调句 It was “at seven o'clock“ that we reached the station（为了强调“at seven o'clock“）同时它也是定语从句：从句“that we reached the station”修饰的是 it=the time.也就是说关键是看前面有没有先行词，有就是定语从句，没有就是时间状语从句。如：1.By the time when you arrived in Beijing, we had stayed there for two weeks. 有先行词 the time 那么 when you arrived in London 就是定语从句 2.when you arrived in Beijing, we had stayed there for two weeks.没有先行词 when you arrived in London 就是时间状语从句。-_5.“It +be+ 时间时间 + 从句从句”结构结构 总结一在“ It +be+ 时间 + 从句”结构中，引导从句的从属连词有 before, that, since, until （ till ） , when 等。这一结构是近几年高考常考的知识点，现将它们的用法小结如下： 一、一、 It +be （ not ） + 时间段时间段 +before 从句。从句。 其中的主句是肯定式时，意为“过多长时间才”；主句是否定式时，意为“没过 多久就”。例如： 1. It may be five or six years before the new medicine is tested on human beings. 要过五六年时间这种新药才能在人身上做试验。 2. It was two months before he designed the bridge. 过了两个月，他设计出了这座桥梁。二、二、 It +will be （ was ） + 时间段时间段 +until 从句从句 若主句中用一般将来时，则从句中用一般现在时，意思是从现在起到从句中谓语动词 表示的动作发生时还有多长时间；若主句中用一般过去时，则从句中也用一般过去时，意 思是从过去某一时间起到从句中谓语动词表示的动作发生还有多长时间。例如： 1. It will be ten days until my birthday comes. 到我生日还有十天。 2. It was only five minutes until her husband came back from work. 当时离她丈夫下班只有五分钟了。 注意：结构“一”与结构“二”在肯定句中几乎可以通用。但是，若从句中谓语动词 表示的将来动作一定或预期肯定会发生，则多用 until 引导从句；若从句中谓语动词表示 的将来动作在客观上并非一定要发生时，则多用 before 引导从句。 三、三、 It +is / has been （ was ） + 时间段时间段 +since 从句从句 在这一结构中，主句常用一般现在时、现在完成时或一般过去时。如果 since 引导的 状语从句中的谓语动词为非延续性动词，则表示“自从状语从句中的动作发生以后，时间 过不了多久”。例如： 1. It is two years since Jim came to China. 吉姆来中国两年了。 2. It has been three years since they got married. 他们结婚已经三年了。 如果 since 从句中的谓语动词为延续性动词，则表示“自从从句谓语动词表示的动作 结束以来，时间已过了多久”。例如： 3. It is / has been a year since he smoked. 他戒烟已经一年了。 四、四、 It +is / was + 时间点时间点 +when 从句从句 在这一结构中，时间之前没有介词，从句为 when 引导的时间状语从句。从句常用一 般过去时，意为“当某事发生时，时间是”。例如： 1. It was October 1st, 1949 when the People's Republic of China was founded. 中华人民共和国成立于 1949 年 10 月 1 日。 2. What time was it when you got to school? 你几点到的学校。 -_五 . It is /was + 时间状语时间状语 +that 从句从句 这是一个强调句型，被强调的部分是时间状语。表示“正是在某个时间，某事发生了”。 例如 1. It was ten years ago that he joined the army. 他正是在十年前参的军。 2. It was yesterday afternoon that I met him in the street. 就是在昨天下午我在街上遇见了他。 六、六、 It is / was +first time / second time + （ that ）从句）从句 在这一结构中， time 前面常用序数词来修饰， that 引导的是定语从句，从句中常用 现在完成时态或过去完成时态，表示“这是第次做某事”。例如： 1. This is the first time in my life that I have come to Beijing. 这是我一生中第一次来北京。 2. It was the third time that he had asked the same question. 这是他第三次问同一个问题。七、七、 It is （ high ） time +that 从句从句 在这一结构中， that 从句中的谓语动词常用虚拟语气，即“ should + 动词原形”或 用动词的过去式，表示“该做某事了”。例如： 1. It is high time that we began our work. 我们该开始我们的工作了。 15.It is time that he left the place. 他该离开那个地方了。总结二 例 1：It is almost five years_we saw each other last time.(05 北京) A.before B.since C.after D.when 例 1.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 oclock_he arrived home. A.before B.when C.that D.until 例 2.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 + 时间段时间段 + since + 一般过去时一般过去时 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 + 时间点时间点 + when clause(从句谓语用一般过去时从句谓语用一般过去时) will be+时间点时间点 +when clause(从句谓语用一般现在时表将来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 例 2：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 + 序数词序数词 + 时间时间 + 定语从句定语从句(从句用完成时从句用完成时) 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：Its the second time you_late this week. A.arrive B.arrived C.havearrived D.hadarrived 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：Its 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 + 时间时间(被强调部分被强调部分) + that 例 1：It was at 6 oclock 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 oclock 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.-_When was_？ _was in 1998 when he was in middle school. A.that;It B.this;This C.this;It D.that;This 16.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. 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 17. -What was the party like？ -Wonderful.Its 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 1 正确答案：A 2 正确答案：B ) 常见时间状语:1.Often,usually-动词原型 do,does,am,is, are2.yesterday,last Sunday,in the past-动词过去式 did,was,were3.now-be+doing4.while,at that time,-was doing,were doing5.since 从句,for 2 days,-have done,have been+过去的某个时间点-had done,had been7.与现在完成相似-have been+持续动词 ing 形式8.一切表示将来的时间状语，in+一段时间-将来要发生的一般性动作,will,shall+原型9.与一般将来时相似-would+原型