高二英语选修6-it的用法-完整ppt课件.ppt

1.知识点：itit的基本用法的基本用法it that/those one/ones it that/those one/ones 的区别的区别强调句强调句itit做形式主语与形式宾语做形式主语与形式宾语itit的常见句型的常见句型2.难点: it that/those one/ones 的区别 强调句 it 的常见句型3.4.1)one, ones, that, thosethat替换替换单数可数名词或不可数名词单数可数名词或不可数名词；one只替换只替换单数的可数名词单数的可数名词。The coffee produced in Brazil is more famous than _in Mexico. that5.2) that只用于替换表示只用于替换表示事物事物的名词，的名词， 而而one/ones替替换表示换表示人人和表示和表示事物事物的名词皆可。的名词皆可。eg: His younger sister is taller than the elder _.I need the plastic bags, not the paper_ .oneones6.3) that/ those一般不带前置定语，但必须有后置定一般不带前置定语，但必须有后置定语。语。one/ones都可。当替换词的后置定语用所有格都可。当替换词的后置定语用所有格的的of短语或当替换词被所有格修饰时，不用短语或当替换词被所有格修饰时，不用one/ones而用而用that of/those of. The windows of your flat are cleaner than _of mine. A grandparents job is easier than _of a parent.thosethat7.4) that/ those用于替换有定冠词的名词；用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。用于替换有不定冠词的名词。eg: The style of the building is similar to _of a temple.A CD player made in Japan costs more than _made in China.thatone8.eg: I bought a dictionary three years ago and I am still using_ now.I bought a dictionary three years ago but I am going to buy a new _soon.it指特定的前面提到过的事物，即：指特定的前面提到过的事物，即：it和它替换的和它替换的是同一个事物，是同一个事物，it前无修饰语；而前无修饰语；而one用于替换与用于替换与前提事物有共同之处但并不完全一样的事物，因此前提事物有共同之处但并不完全一样的事物，因此，one之前或之后一定有修饰语来加以区别。之前或之后一定有修饰语来加以区别。5) it和和one itone9. it that/those one/ones 的区别：that替换替换单数可数名词或不可数名词单数可数名词或不可数名词，one只替换只替换单数的可数名词单数的可数名词that只用于替换表示只用于替换表示事物事物的名词，的名词， 而而one/ones替换表示替换表示人人和表示和表示事物事物的名词的名词皆可。皆可。that/ those一般不带前置定语，但必须有后置定语。一般不带前置定语，但必须有后置定语。one/ones都可。当替换都可。当替换词的后置定语用所有格的词的后置定语用所有格的of短语或当替换词被所有格修饰时，不用短语或当替换词被所有格修饰时，不用one/ones而用而用that of/those of.that/ those用于替换有定冠词的名词；用于替换有定冠词的名词；one/ones用于替换有不定冠词的名词。用于替换有不定冠词的名词。it指特定的前面提到过的事物，即：指特定的前面提到过的事物，即：it和它替换的是同一个事物，和它替换的是同一个事物，it前无修饰前无修饰语；而语；而one用于替换与前提事物有共同之处但并不完全一样的事物，因此，用于替换与前提事物有共同之处但并不完全一样的事物，因此，one之前或之后一定有修饰语来加以区别。之前或之后一定有修饰语来加以区别。10.1.The Parkers bought a new house but _ will need a lot of work before they can move in. (NMET2001,25) A.they B.it C.one D.which 2.I am looking for a house. Id like _ with a brook(小溪) around_. A.one,it B.it,it C.one,one D.it,one3 I am moving to the countryside because the air there is much fresher than_ in the city.A.ones B.one C.that D.those11.12.一、一、 It is/was+ 被强调部分是物被强调部分是物 + that+剩余的部分剩余的部分 被强调部分是人被强调部分是人 + who/whom/ that +剩余的部分剩余的部分 注意注意 我昨天在街上看到TOM.I met Tom in the street yesterday.13. It was I who (that) met Tom in the street yesterday. It was Tom that I met in the street yesterday. It was in the street that I met Tom yesterday. It was yesterday that I met Tom in the street.主语主语宾语宾语时间状语时间状语地点状语地点状语14.强调句的连接词一般只用强调句的连接词一般只用 that ； 强调人时，强调人时，可用可用who (主语主语) 或或 whom (宾语宾语).强调句的句型一般为强调句的句型一般为“It was/is+强调部分强调部分+that+其余部分其余部分”强调时间强调时间,地点地点,原因状语时原因状语时,不能使用不能使用when,where,why 来代替来代替that15.二二 It was yesterday that I met Tom in the street.(改为一般疑问句改为一般疑问句)Was it yesterday that I met Tom in the street？It was yesterday that I met Tom in the street.(就划线部分提问就划线部分提问)When was it that I met Tom in the street？强调句的一般疑问句句型：强调句的一般疑问句句型：Is / Was +it +所强调的部分所强调的部分+that / who/ whom+其余部分其余部分?强调句的特殊疑问句句型：强调句的特殊疑问句句型：特殊疑问词特殊疑问词 +was/is that+其余部分其余部分?16.I didnt realize she was a famous film star until she took off her dark glasses. 三三 not . until . 的强调形式的强调形式: It is not until + 被强调部分被强调部分 + that . “直到直到才才”，主要用于强调时间状语的强调句型。主要用于强调时间状语的强调句型。 It was not until she took off her dark glasses that I realized she was a famous film star.17.四 强调主语时，谓语动词应与之保持一致。It is I who _to go there together with you .A.am B is C are D were It was Mary and Mike who _ praised at the meeting.A.are B is C were D am五 强调主语或宾语且其为人称代词时，应注意其形式仍用主格或宾格形式It was _who showed me to the headmasters office.A.she B.her C. hers D it It was _ that the headmaster shook hands with yesterday.A.him B.his C.he D.it 18.六 强调句与定语从句的区别:It was in 1945 that World War II ended. (强调句强调句)It was 1945 when World War II ended.(定语从句定语从句) It was in this factory _ my father used to work.It was this factory _ my father used to work. 被强调的部分为主语、宾语和状语被强调的部分为主语、宾语和状语,若把若把it iswas和和thatwho去掉去掉,剩下的词语能重新组成正确剩下的词语能重新组成正确的句子的句子,而且不缺成分而且不缺成分,其就是强调句，否则就是其其就是强调句，否则就是其它从句。它从句。 thatwhere19.1 It was this village _ I was brought up . A. where B. that C. on which D. which2. It was in this village _ I was brought up.A. where B. that C. on which D. which20.选用that ,it ,when,where,which,why ,who填空1 How was _ _ you succeeded?2 Was it in the village _ we used to live in _ the accident happened?3 It was the teacher _ made _ possible _ I went to college.4 It was 1979_ I graduated from the university.5 It was Beijing _ I went to the Great Wall last year.6 Was it in 1982_ you were in college _ you got to know her?itthatwhichthatwho/thatitthatwhenwherewhenthatit21.强调句应注意以下几点:1 It is/was+ 被强调部分是物被强调部分是物 + that+剩余的部分剩余的部分 被强调部分是人被强调部分是人 + who/whom/ that +剩余的部分剩余的部分 注意注意 2 强调句的连接词一般只用强调句的连接词一般只用 that ； 强调人时，可用强调人时，可用who (主语主语) 或或 whom (宾语宾语).3 强调句的时态一般为强调句的时态一般为“It was/is+强调部分强调部分+that+其余其余部分部分”4 强调时间强调时间,地点地点,原因状语时原因状语时,不能使用不能使用when,where,why 来代替来代替that5 强调句的一般疑问句句型：强调句的一般疑问句句型：Is / Was +it +所强调的部分所强调的部分+that / who/ whom+其余部其余部分分?22.6 强调句的特殊疑问句句型：强调句的特殊疑问句句型：特殊疑问词特殊疑问词 +was/is that+其余部分其余部分?7 not . until . 的强调形式的强调形式: It is not until + 被被强调部分强调部分 + that . “直到直到才才”，主要用于强调时间状语的强调句型。主要用于强调时间状语的强调句型。8 强调主语时，强调主语时，谓语谓语动词应与之保持一致。动词应与之保持一致。9强调强调主语主语或或宾语宾语且其为人称代词时，应注意其形且其为人称代词时，应注意其形式仍用主格或宾格形式式仍用主格或宾格形式10被强调的部分为主语、宾语和状语被强调的部分为主语、宾语和状语,若把若把it iswas和和thatwho去掉去掉,剩下的词语能重新组成正剩下的词语能重新组成正确的句子确的句子,而且不缺成分而且不缺成分,其就是强调句，否则就是其就是强调句，否则就是其它从句。其它从句。 23.巩固练习：巩固练习：1.It was _ he said _disappointed me.A. what ; that B. that; thatC. what; what D. that; what2. Is it in the factory _ this type of cars are produced?A. which B. where C. that D. / 3. Is it the factory_ this type of cars are produced ?A. which B. where C. that D. /24.4. _ on Monday night that all this happened?A. Is it B. It is C. Was it D. It was5. It was _ the old worker came that we _ the experiment.A. until; didnt begin B. not until; beganC. until began D. not until; didnt begin 6. It is I _ singing in the garden.A. who are B. who am C. that are D. that is25.1. It was about 600 years ago _ the first clock with a face and an hour hand was made. (NMET 1997) A. that B. until C. before D. when2. It was only when I reread his poems recently _ I began to appreciate their beauty. (NMET 1998) A. until B. that C. then D. so高考链接26.3. Why! I have nothing to confess. _ you want me to say? (NMET 2004上海上海)A. What is it that B. What it is thatC. How is it that D. How it is that4. It was _ back home after the experiment. (NMET 2004湖北湖北)A. not until midnight did he goB. until midnight that he didnt goC. not until midnight that he wentD. until midnight when he didnt go27.把下列句子改为强调结构把下列句子改为强调结构:1 The meeting will not begin until everyone is seated.2 How did you find his house?3 They said honesty is the best of all the virtues.1 It is not until everyone is seated that the meeting will begin.2 How was it that you found his house?3 They said it is honesty that is the best of all virtues.28.29.补充完整下列句子补充完整下列句子:1 It _to walk to school every day.每天我走路去学校花了20分钟的时间.2 _that he studied abroad when he was young. 据说他年轻时在外国留学3 It is_(cry)over the spilt milk. 覆水难收.4 It is _that I _the Great Wall.这是我第一次参观长城.5 _ she is so angry.难怪她如此生气. It is _ we last met. 自从我们上次相遇已有三年.7 It _before we graduate.我们不久就要毕业.8 It is _.我们该起床了.takes me 20 minutesIt is saidno use cryingthe first timehave visitedIt is no wonder thatthree years sincewill not be longtime that we should get up /time that we got up .30.1 必须干必须干的时候了的时候了.2 花某人花某人.时间干某事时间干某事.3 难怪难怪/真可惜真可惜/真可耻真可耻4 似乎似乎碰巧碰巧5 众所周知众所周知/据报道据报道/据说据说/人们相信人们相信/人们希望人们希望6 干干.是没用的是没用的.7 自从自从.是是/有多长时间了有多长时间了.8 要过很久才要过很久才 9 做某事很值得做某事很值得10这是这是/那是那是/这将是某人第几次做某事了这将是某人第几次做某事了.31.1 It is time /high time +that sb should do sth /did sth .2 It takes sb time to do sth.3 It is no wonder/a pity/a shame +that 从句从句4 It seems /happens +that 从句从句5 It is known/reported/said/believed/hoped+that 从句从句=People know/report/say /believe/hope +that 从句从句6 It is useless/no use /no good +doing sth 7 It is /has beensince.8 It will be +一段时间一段时间+before 要过多少时间才要过多少时间才9 It is well worth doing sth.10 It is + 序数词序数词+time +that sb have done sth 32.1 It occurred to sb that + 从句某事发生在某人身上2 It is /was/will be the +序数词+time +that 从句这是/那是/这将是某人第几次做某事了.(谓语动词为is ,从句用现在完成时,谓语动词为,从句用过去完成时,谓语动词为,从句用一般将来时表示将来.)这是我第一次来这里.It is the first time that I have been there.3 It is ones turn to do sth .该轮到某人做某事了.4 It is a waste of time doing sth.做某事是在浪费时间.5 It is up to sb to do sth .该由某人做某事了.33.难点：it that/those one/ones 的区别强调句it 的常见句型34.翻译下列句子复习今天所讲的内容背诵it的常见句型试卷20条选择35. It is never too old to learn. 活到老，学到老。活到老，学到老。 It is easier to fall than to rise. 摔倒容易爬起来难。摔倒容易爬起来难。 It is no use crying over spilt（溢出的）（溢出的） milk. 覆水难收。覆水难收。 It never rains but it pours(泼水泼水). 不鸣则已，一鸣惊人。不鸣则已，一鸣惊人。 It is easy to open a shop but hard to keep it always open. 创业容易守业难。创业容易守业难。 It takes three generations（代）（代） to make a gentleman. 十年树木，百年树人。十年树木，百年树人。Proverbs(谚语谚语) with “It”Classify（分类）（分类） the proverbs according to the usages of “it”.Group 1 _Group 2 _Group 3 _36.(用含用含it 的句子来翻译的句子来翻译)1 是是Tom帮我解出了这道难题帮我解出了这道难题.2 就是这个湖我以前经常在这游泳就是这个湖我以前经常在这游泳.3 据说他是个百万富翁据说他是个百万富翁.4 他当然会出席会议他当然会出席会议.5 是他们意识到问题的时候了是他们意识到问题的时候了.6 你这样做很聪明你这样做很聪明.7 直到下车我才意识到这一点直到下车我才意识到这一点.8 我发觉学习外语很有趣我发觉学习外语很有趣.37.thank youthank you 38.1It was Tom who helped me work out this difficult problem.2 It is the lake that I used to swim in .3 It is said that he was a millionaire.4 It is quite certain that he will be at the meeting.5 It is high time that he realized the problem.6 It is clever of you to do like this.7 It was not until I got off the bus that I realized it.8 I found it interesting to learn a foreign language,39.40.41.