【简介】感谢网友“雕龙文库”参与投稿,这里小编给大家分享一些,方便大家学习。
【归纳拓展】 as作连词的用法: (1)作“当……的时候”,引导时间状语从句。注意与when, while的用法区别。
① when作“当……的时候”解,可以指较短的(一点)时间,也可指一段时间,即非延续性动词。 When he was at college,he could speak several foreign languages. When the clock struck twelve,all the lights in the street went out. ② while常表示一段较长的时间或一个过程,即延续性动词。强调主句谓语动词与从句谓语动词同时发生。 Work while you work.Play while you play. ③但属下列情形时,只用as,而不用when或while。 a.用于表示同一个人的两个动作交替进行,指“一边……,一边……”。 The girl dances as she sings on the stage. He looked behind from time to time as he went forward. b.表示两个同步发展的动作或行为,译为“随着……”。 As time went on/by,she became more and more worried. As children get older,they become more and more interested in the things around them. c.后接名词表示某一年龄段时,用as。 As a young man,he was active in sports. (2)as=since,作“既然”“由于”解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。 As/Since you’re not feeling well,you may stay at home. As he wasn’t ready in time,we went without him. (3)as=in the way that,作“像”“按照……的方式”解,引导方式状语从句。 He speaks English as Americans do. Remember,you must do everything as I do. (4)用于as...as...或not so/ as...as...中,前一个as是副词,后一个as是连词,引导比较状语从句。 They helped the old man as often as possible. I don’t speak English so/ as well as he does. (5)作“虽然”“尽管”解,引导让步状语从句。常用倒装语序,即adj./adv./n.+as +主语+谓语+主句。 Tired as they were,they walked on.Child as he is,he knows a lot.(child前不用冠词) as作关系代词 (1)引导非限制性定语从句,作“正如”“这一点”解。 He is very careful,as his work shows. As is wellknown,Taiwan belongs to China. as的这种用法,请看下面的高考题: ________ is known to everybody,the moon travels round the earth once every month. A.It
B.As
C.That
D.What 答案:B 经常的搭配有:as is mentioned above;as is often the case;as you have seen;as we all know等。 (2)当先行词被the same,such等词修饰时,常用as来引导定语从句。 Such a clever boy as he can learn everything quickly. I was reading the same book as he bought yesterday.
as作介词的用法: as引导的介词短语大多用作状语,as译为“作为”;少数情况可引起宾语补足语。 As a League member,I’ll take the lead in everything.(状语) She works as a doctor.(状语)
They treat me as one of their own children.(引起宾语补足语) 即学即用
According to statistics,a man is more than twice as likely to die of skin cancer ________ a woman.(2009·江西,24) A.than
B.such
C.so
D.as 解析:本题考查倍数表达法,核心结构为:倍数+as+原级+as,故选C。 答案:D
______ I explained on the phone,your request will be considered at the next meeting. A.When
B.After
C.As
D.Since 解析:本题考查as引导的非限制性定语从句,根据句意“就像我电话里解释的一样”,选as。 答案:C
_______ is often the case,we have worked out the production plan. A.Which
B.When
C.What
D.As
解析:理由同,引导定语从句。 答案:D 41 42 43 名
师
原
创 1.We haven’t moved into the new office building—it _______
right now.
A.is decorating
B.has been decorated
C.is being decorated
D.has been decorating
解析:考查动词时态、语态。根据题干中前面一句话的时
态及后一句话中的时间状语right now可知,应用现在进行
时;又依据语意可知,房子正在(被)装修,因此选C。
答案:C 2.—How long have you been here?
—________the end of last month.
A.In
B.By
C.At
D.Since
解析:since引导的介词短语和现在完成时连用。
答案:D 3.She’s asked me________to build the church.
A.how long it was taken
B.how long it had taken
C.how much time did it take
D.how much time it was taken
解析:考查宾语从句及take的用法。宾语从句中需用陈述语序,
故排除C;花时间做——为“it takes some time to dosth.”,
故排除A、D。
答案:B 4.Although the causes of cancer________,we do not yet have
any practical way to prevent it.
A.are being uncovered
B.have been uncovering
C.are uncovering
D.have uncovered
解析:因为句子的主语the causes of cancer与谓语uncover
是被动关系,因此我们使用被动结构,只有A 符合这一条
件。
答案:A 5.By the end of last year,another new gymnasium________in
Beijing.
A.would be completed
B.was being completed
C.has been completed
D.had been completed
解析:by意为“到……为止”。by后加过去时间,主句用过去
完成时,如by后加现在时间,用现在完成时,如by后加将来
时,主句要用将来完成时。by the end of last year常与过
去完成时连用。表示到过去某个时候前已完成的动作。
答案:D 6.When and where to go for the onsalaryholiday ______ yet.
A.are not decided
B.have not been decided
C.is not being decided
D.has not been decided
解析:根据副词yet可确定用现在完成时,可排除A、C;
不定式,动名词及从句作主语,谓语动词用单数,when and
where to do sth.为一个问题,要用has not been decided。
答案:D 7.The result was far beyond________we had expected,______
brought great joy to every one of us.
A.that;which
B.than;that
C.what;what
D.what;which
解析:考查宾语从句和定语从句。第一空用what引导宾语从
句,连词what在从句中作宾语,第二空用which引导非限制性
定语从句,关系代词which指代主句内容。
答案:D
8.The new suspension bridge________by the end of last month.
A.has been designed
B.had been designed
C.was designed
D.would be designed
解析:在含有by引导的表示过去意义的时间状语的句子中,
谓语动词要用过去完成时。句意:到上月为止已完成了吊桥
设计。
答案:B 9.—How are you today?
—Oh,I________as ill as I do now for a very long time.
A.didn’t feel
B.wasn’t feeling
C.don’t feel
D.haven’t felt
解析:现在完成时表示从过去的某个时候开始一直延续
到现在的动作或状态。从句子的意思可知,从过去某个
时候开始,已经病了很长时间了。
答案:D 10.A new cinema________here. They hope to finish it next
month.
A.will be built
B.is built
C.has been built
D.is being built
解析:根据They hope to finish it next month.说明电影
院还在建设之中,所以时态用进行时;另外语态为
被动语态。
答案:D 过去完成时 一、定义:过去完成时是表示在过去某一时间或某一动作之前
已经发生或完成的动作、事情。它表示的是发生在“过去
的过去”的动作,只有在和过去某个时间或动作相比较的
时候才会使用过去完成时。 二、构成:过去完成时的构成: had +过去分词 三、用法: 1.与by,before,by the end of引导的表示过去的时间状语连用。 by then,by,before nine o’clock yesterday,by the end of last year,by the age of twenty,by the time I arrived... 2.在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。 When I returned home,my guest had already left. I did not see the film because I had seen it before. 3.常用于told,said,knew,heard,thought,asked等动词后的宾 语从句。 She said (that) she had never been to Paris. He asked what I had said. 现在完成时和过去完成时的区别: 现在完成时强调对现在的影响或结果,过去完成时强调对过去的影 响或结果。 语
法
专
练 1.He asked me ________ during the summer holidays.
A.where I had been
B.where I had gone
C.where had I been
D.where had I gone
答案:B 2.What ________ Jane ________ by the time he was seven?
A.did;do
B.has;done
C.did;did
D.had;done
答案:D 3.I ________ 900 English words by the time I was ten.
A.learned
B.was learning
C.had learned
D.learnt
答案:C 4.She ________ lived here for ________ years.
A.had;a few
B.has;several
C.had;a lot of
D.has;a great deal of
答案:B 5.By the time my parents reached home yesterday,I ______
the dinner already.
A.had cooked
B.Cooked
C.have cooked
D.was cooked
答案:A 6.She said she ________ the principle already.
A.has seen
B.saw
C.will see
D.had seen
答案:D 7 .She said her family ________ themselves ________ the army
during the war.
A.has hidden;from
B.had hidden;from
C.has hidden;with
D.had hidden;with
答案:B 8.By the time he was ten years old,he ________.
A.has completed university
B.has completed the university
B.had completed an university
D.had completed university
答案:D 9.She had written a number of books ________ the end of
last year.
A.for
B.in
C.by
D.at
答案:C 10.He ________ to play ________ before he was 11 years old.
A.had learned;piano
B.had learned;the piano
C.has learned;the piano
D.learns,piano
答案:B 11.Mary went to the box office at lunch time,but all the
tickets ________ out.(2009·上海,29)
A.would sell
B.had sold
C.have sold
D.was selling
解析:句意:玛丽在午饭时间去了售票处,但是所有的
票都已经卖完了。根据题干信息Mary went to为过去时
间,而售完票在此之前,即“过去的过去”。
答案:B
12.When I talked with my grandma on the phone,she
sounded weak,but by the time we ________ up,her voice
had been full of life.(2009·北京,30)
A.were hanging
B.had hung
C.hung
D.would hung
解析:句意:当我与奶奶在电话中交谈时,她的声音听起
来很虚弱,但到我们挂电话时,她的声音已经充满了活力。
此题考查时态,根据题干,her voice had been full of life为
过去的过去,因此我们挂电话为过去时。
答案:C 1.On January 19,1992,14 years after the reform and opening,
Deng Xiaoping arrived at Shenzhen,which was the second
and the last time that he ________the first open city in new
China.
A.toured
B.has toured
C.had toured
D.would tour
解析:本题考查时态。句型为It/This/That was the+序数词
+名词+从句,其中从句中用过去完成时。根据句意“……
这是邓小平第二次也是他最后一次参观新中国第一个对外
开放的城市——深圳”可知,C项正确。
答案:C 思路拓展:出现在其他句型中的过去完成时: (1)Hardly/Rarely+had+主语+done+when从句 (2)No sooner+had+主语+done+than从句 警示误区:句型It/This/That is the+序数词+名词+从句,其中从句中使用现在完成时。 2.He left the company last month,where he________for exactly
three years.
A.worked
B.was working
C.has worked
D.had worked
解析:考查时态。主句是过去时态,定语从句中谓语的动作
发生在主句的谓语动作之前,并且和表示一段时间的状语连
用,所以用过去完成时态最合适。
答案:D 3.The famous actress objected to the reports in the newspaper
that she ________on weight recently.
A.had put
B.would put
C.has put
D.put
解析:考查时态。第一个动词objected表明主句为一般过
去时,再结合同位语从句中的副词recently可知从句应用
过去完成时。
答案:A
拓展提升:过去完成时是英语中较容易用错的时态。它表
示在过去的某个动作之前发生的动作。试题通常会提供一
个过去的时间或动作作参照,在此之前发生的动作就用过
去完成时。 4.It was the third time that I________of the changes of the
timetable.
A.had informed
B.had been informed
C.has informed
D.has been informed
解析:考查时态和语态。在“It is the+序数词+time that...”
句型中,从句常用现在完成时;而在“It was the+序数词+
time that...”句型中,从句常用过去完成时,所以先排除C
项和D项;inform sb.of sth.为固定句型,表示“通知某人某
事”,若inform和介词of连在一起,一般是被动语态,所以
B项正确。
答案:B 5.The fire ________before the firefighters arrived.
A.has been put out
B.had been put out
C.was put out
D.had put out
解析:考查时态和语态。put out这个动作发生在arrived
之前,故应用过去完成时态,表示“过去的过去”。同时
主语the fire和put out存在被动关系,故用被动语态。
答案:B 【例1】 John was given the same suitcase his father and
grandfather ________ with them to school.(2009·北京,32)
A.took
B.had taken
C.were taking
D.would take
【解题方法指导】 句意:约翰得到他父亲和祖父上学时携带
的那个行李箱。根据题干中John was given为过去的时间参