when 用法小结

第一篇:when 用法小结

       when 用法小结

       不管是在口语中,还是在书面语中,when是一个十分活跃的词,该词主要用作连词和副词,但是在意义方面其用法比较复杂。

       一、作副词

       1.作疑问副词,用于构成特殊疑问句,意为“什么时候;何时”

       When will they come back?他们什么时间回来?

       When can you finish the work? 你什么时间能完成这项工作?

       2.作连接副词,引导名词性从句,或与不定式连用,意为“什么时候”

       Can you tell me when the bank opens?你能告诉我银行什么时候开门吗?

       When she'll be back depends on the weather.她何时回来取决于天气。

       Have you decided when to go sightseeing?你们已经决定什么时候去郊游了吗? 3.作关系副词,引导定语从句。

       The main school holidays are from mid-December till early February,when the days are long and warm.Do you remember the time when the three of us went on a holiday in Guilin?

       你还记得我们三个人在桂林度假的那段时光吗?

       二、作从属连词,引导状语从句。

       1.表示时间,意为“当„„时;在„„的时候”

       When you see him, please say hello to him.见到他时,代我问他好。

       When I reached the station,the train had left.当我到达火车站时,火车已经开走了。

       2.表示条件,相当于if

       How can I get a job when I can't even read or write?如果我连读和写都不会,我怎么能找到工作呢?

       3.表示对比,相当于whereas, while, since, 意为“既然;然而”

       How can I help them to understand when they won't listen to me?

       既然他们不愿听我的,我又怎么能帮助他们弄明白呢?

       4.when 从句中使用虚拟语气,意为“本来„„却„„”

       She paid when she could have entered free.本来可以免费入场,而她却付了款。

       She stopped trying when she might have succeeded next time.她本来下次有可能获得成功,但她却不再尝试了。

       三、作并列连词

       表示前面的叙述所没有提到过的信息,对所描述的事件予以引人注目的强调,意为“这时;突然”

       大致有以下三种情况:

       1.be doing sth.when

       I was thinking of this when I heard my name called.我正想着这件事,突然听到有人叫我的名字。

       2.be about to do sth.when

       We were about to start when it began to rain.我们刚要出发就开始下雨了。

       3.sb.had hardly/scarcely/barely...when

       We had hardly fallen asleep when the bell rang.我们刚刚入睡,铃声就响了起来。

       四、作代词,意为“什么时候,何时”,常用在since,till,up to等之后。

       Since when have you been interested in my feelings?你从什么时候起开始关心起我的感受来了?

       when 用法 一.when 用作副词。

       1.用作疑问副词,引导特殊疑问句。例如:

       When are they going to visit the Great Wall? 他们打算什么时候去游览长城?

       2.用作连接副词,通常用来引导主语从句、表语从句、同位语从句、宾语从句及起名词作用的“ when +动词不定式”结构。例如:

       When he comes is not known.他何时来还不知道。

       The morning is when I am busiest.早上是我最忙的时候。

       I have no idea when the game will begin.我不知道比赛何时开始。

       I don't know when the plane takes off.我不知道飞机何时起飞。

       I don't know when to leave for London.我不知道该在何时动身去伦敦。

       3.用作关系副词,引导限定性定语从句和非限定性定语从句。例如:

       Do you still remember the days when we stayed in America? 你还记得我们呆在美国的那些

       The day will come soon when the Chinese astronauts will go to the moon.It happened ten years ago, when I was a child.事情发生在十年前,当时我还是个小孩子。

       二.when 用作连词。

       1.用作从属连词,意为“当……的时候”,引导时间状语从句。例如:

       They learned a lot from the peasants when they stayed in the village.It was snowing when he arrived at the station.他到达车站时,天正下着雪。

       注意:如果 when 引导的从句中的主语和主句中的主语一致,且从句中的谓语动词是“ be +分词”或从句主语是 it,则 be 动词及其主语常可省略。例如:

       When(he was)asked why he was late, he made no answer.当被问到他为什么迟到时,他避而不答。

       I'll tell him about it when(it is)possible.在可能的时候,我会把那件事告诉他的。

       2.用作从属连词,意为“一……就……”,引导时间状语从句。例如:

       We will stand up when the teacher comes into the classroom.老师一进教室我们就起立。

       Fire the rockets when I give the signal.我一发信号,你就点燃火箭。

       3.用作从属连词,意为“还没 / 刚刚……就”,引导时间状语从句。例如:

       I had hardly opened the door when he came in.我刚一开门,他就进来了。

       4.用作从属连词,意为“倘若,如果”,表示条件。例如:

       He will be likely to recover when he is operated on.如果动手术,他有可能康复。

       Turn off the switch when anything goes wrong with the machine.如果机器发生故障,就把电

       5.用作从属连词,意为“既然,尽管”,表示让步。例如:

       Why use metal when you can use plastic? 既然能用塑料,为什么用金属呢?

       They kept trying when they knew it was hopeless.尽管他们知道那件事没有希望

       6.用作并列连词,意为“在那时,届时”,表示时间。这时主句中可以用过去进行时,过去完成时或“ was/were about to do sth.”结构。例如:

       Last night I was about to go to bed when the phone rang.昨天晚上我正要上床睡觉时,电话铃响了。

       I was cooking in the kitchen when someone knocked at the door.我正在厨房做饭,这时有人敲门。

       He had just finished the book when supper was served.我刚刚读完这本书,这时晚饭就端上来了。

       7.用作并列连词,意为“虽然、然而、可是”,表示转折。例如:

       He usually walks to work when he might take a bus.虽然他可以坐公共汽车上班,但他却常常步行上班。

       I had only twenty dollars when I needed thirty to buy the dictionary.我需要 30 美元买那本字典,可是我只有 20 美元。

       8.用作并列连词,意为“而、却”,表示对比。例如:

       How can he say that everything is fine when it's obvious that it is not? 他怎能说一切都好呢?情况显然不是那样。

       三.when 用作代词。

       when 作为代词常常位于介词之后,意为“那时,什么时候”。例如:

       We came back on Tuesday, since when we have been working in the repair shop.我们星期二回来,从那时起就一直在修配车间工作。

       Since when have you been studying Japanese? 你是从何时起一直学习日语的?

       另外,when 还可用作名词,前面常常用定冠词 the。the when 表示事件发生的时间,常常与 the where, the how 并列使用。例如:

       He told the police the when and the how of the accident.他告诉警察事故发生的时间及发生的原委。

第二篇:when it comes to 的用法

       when it comes to 是一个习语,是固定搭配。

       意思是:一谈到……;就……而论。

       其英文的解释:as for something;speaking about something(至于某事,谈及某事)。

       近义词有:refering to, talking about等。如:when it comes to making decision,……(谈及到做决定这事情)可以改写为“Talking about making decision..."

       用法

       (1)是后面接名词或接动词的ING形式(动名词)

       (2)when前面可以用逗号,整个跟着某个句子句子后面(用法有点像插入语)。也可以作为分句直接位于句首,整个部分后接逗号。

       例子:

       1.Alought she plays football well, when it comes to English, she is not so good.她的足球玩得很好,就英语而言,她没学的那么好。

       2.When it comes to eating, Joey is full of joy.一谈到食物,乔伊就很高兴。3.When it comes to fishing, John is an expert.谈及钓鱼,约翰是个专家。

       4.When it comes to trouble, Mary really knows how to cause it.一谈到困难,玛丽明确的知道该如何解决。

第三篇:while、when和as的用法区别

       as when while 的区别和用法

       as when while的用法

       一、as的意思是“正当……时候”,它既可表示一个具体的时间点,也可以表示一段时间。as可表示主句和从句的动作同时发生或同时持续,即“点点重合”“线线重合”;又可表示一个动作发生在另一个动作的持续过程中,即“点线重合”,但不能表示两个动作一前一后发生。如果主句和从句的谓语动词都表示持续性的动作,二者均可用进行时,也可以一个用进行时,一个用一般时或者都用一般时。

       1、As I got on the bus,he got off.我上车,他下车。(点点重合)两个动作都是非延续性的

       2、He was writing as I was reading.我看书时,他在写字。(线线重合)两个动作都是延续性的

       3、The students were talking as the teacher came in.老师进来时,学生们正在讲话。(点线重合)前一个动作是延续性的,而后一个动作时非延续性的二、while的意思是“在……同时(at the same time that)”“在……期间(for as long as, during the time that)”。从while的本身词义来看,它只能表示一段时间,不能表示具体的时间点。在时间上可以是“线线重合”或“点线重合”,但不能表示“点点重合”。例如:

       1、He was watching TV while she was cooking.她做饭时,他在看电视。(线线重合)

       2、He was waiting for me while I was working.我工作的时候,他正等着我。(线线重合)

       3、He asked me a question while I was speaking.我在讲话时,他问了我一个问题。(点线重合)

       三、when的意思是“当……时候(at the time that)”“无论什么时候(whenever)” “一……就……(as soon as)” “在……以后(after)”。它表示的时间概念比较广泛,上述例句中的as或while均可用when代替,因为when不但可以表示具体的时间点,而且也可以表示一段时间。在时间上它既能表示“点点重合”“线线重合”,又能表示“点线重合”。例如:

       1、When he came in,she went out.他进来,她出去。(点点重合)

       此句中when从句的动作表示的是一个时间点,when可以用as代替,但不能用while代替。

       2、When he came back,I was doing some washing.他回来时,我在洗衣服。(点线重合)

       此句中when从句的动作表示的是一个时间点,所以只能用as代替,不能用while代替。

       as when while的区别

       一、根据从句动作的持续性来区分

       1、“主短从长”型:即主句是一个短暂性动作,而从句是一个持续性动作,此时三者都可用。如:

       Jim hurt his arm while[when,as] he was playing tennis.吉姆打网球时把手臂扭伤了。

       As[When,While] she was waiting for the train,she became very impatient.她在等火车时,变得很不耐烦。

       注意:as 用于引出一个持续性动词表示“在……期间”时,其谓语通常只能是那些含有动作(action)和发展(development)意味的动词,一般不能是那些不用于进行时态的动词(如 be,seem,love,want,agree,see,know,have等),所以下面一句中的 while 不能换为 as:

       A:I’m going to the post office.我要去邮局。

       B:While you are there,can you get me some stamps?当你在邮局时,能帮我买几张邮票吗?

       2、“主长从长”型:即主句和从句为两个同时进行的动作或存在的状态,且强调主句动作或状态延续到从句所指的整个时间,此时通常要用while。

       I always listen to the radio while I’m driving.我总是一边开车一边听收音机。

       He didn’t ask me in;he kept me standing at the door while he read the message.他没有让我进去,他只顾看那张条子,让我站在门口等着。

       但是,若主句和从句所表示的两个同时进行的动作含有“一边……一边”之意时,则习惯上要用as。如:

       He swung his arms as he walked.他走路时摆动着手臂。

       I couldn’t remember a story to tell the children, so I made one up as I went along.我想不出有什么故事可给孩子讲了,只好现编现讲。

       3、“主长从短”型:即主句是一个持续性动作,而从句是一个短暂性动作,此时可以用as或when,但不能用while。如:

       It was raining hard when [as] we arrived.我们到达时正下着大雨。When [As] he came in, I was listening to the radio.他进来时,我在听收音机。

       二、根据主句与从句动作是否同时发生来区分

       1、若主句与从句表示的是两个同时发生的短暂性动作,含有类似汉语“一……就”的意思,英语一般要用as(也可用when)。如:

       The ice cracked as [when] I stepped onto it.我一踩冰就裂了。He jumped to his feet as the boss came in.老板一进来他立刻站了起来。但是,在hardly [scarcely]…when…句式中,不能将when换成as。如: Scarcely had we arrived, when it began to rain.我们刚一到就下起雨来了。

       2、若主句与从句表示的是两个几乎同时发生的短暂性动作,含有类似汉语“刚要……就”“正要……却”的意思,英语一般要用as(也可用when),且此时通常连用副词just。如:

       I caught him just when [as] he was leaving the building.他正要离开大楼的时候,我把他截住了。

       Just as [when] the two men were leaving, a message arrived.就在这两个人要离开的时候,突然有了消息。

       三、根据是否具有伴随变化来区分

       若要表示主句动作伴随从句动作同时发展变化,有类似汉语“随着”的意思,英语习惯上要用as,而不用when或while。如:

       The room grew colder as the fire burnt down.随着炉火逐渐减弱,房间越来越冷。

       As time goes by my memory seems to get worse.随着时间的流逝,我的记忆力似乎越来越差。

       注:若不是引导从句,而是引出一个短语,则用with,不用as。如: With winter coming on, it’s time to buy warm clothes.随着冬天到来,该买暖和衣裳了。

       The shadows lengthened with the approach of sunset.随着太阳下落,影子也逐渐伸长。

       四、根据从句动作的规律性来区分

       若暗示一种规律性,表示“每当……的时候”,英语一般要用when。如: It’s cold when it snows.下雪时天冷。

       He smiles when you praise him.你夸奖他时他总是笑笑。

       五、根据主从句动作的先后顺序来区分

       若主句与从句所表示的动作不是同时发生,而是有先后顺序时,一般要用when。如:

       When he arrives he’ll tell us all about the match.等他到了,他会好好给我们讲讲那场比赛的情况。

       When she had finished she waited as though for a reply.她讲完之后等了等,仿佛是在等候回答似的。

       六、根据是否具有“趁机”意味来区分

       1、若从句所表示的“当……的时候”具有“趁机”的意味,则通常用while。如: Strike while the iron is hot.趁热打铁。

第四篇:when 和while的用法区别

       when 和while的用法区别

       ①when是at or during the time that, 既指时间点,也可指一段时间;

       while是during the time that,只指一段时间,因此when引导的时间状语从句中的动词可以是终止性动词,也可以是延续性动词,而while从句中的动词必须是延续性动词。

       ②when 说明从句的动作和主句的动作可以是同时,也可以是先后发生;while 则强调主句的动作在从句动作的发生的过程中或主从句两个动作同时发生。

       ③由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时;如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如: a.When the teacher came in, we were talking.当此句改变主从句的位置时,则为:

       While we were talking, the teacher came in.b.They were singing while we were dancing.④when和while 还可作并列连词。when表示“在那时”;while表示“而,却”,表对照关系。如:

       a.The children were running to move the bag of rice when they heard the sound of a motor bike.孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音。

       b.He is strong while his brother is weak.他长得很结实,而他弟弟却很瘦弱。

       when,while,as引导时间状语从句的区别

       when,while,as显然都可以引导时间状语从句,但用法区别非常大。

       一、when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。

       ① Why do you want a new job when youve got such a good one already?(get为短暂性动词)你已经找到如此好的工作,为何还想再找新的?

       ②Sorry,I was out when you called me.(call为短暂性动词)对不起,你打电话时我刚好外出了。

       ③Strike while the iron is hot.(is为延续性动词,表示一种持续的状态)趁热打铁。④ The students took notes as they listened.(listen为延续性动词)学生们边听课边做笔记。

       二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while和as从句的谓语动作必须是和主句谓语动作同时发生。

       1.从句动作在主句动作前发生,只用 when。

       ①When he had finished his homework,he took a short rest.(finished先发生)当他完成作业后,他休息了一会儿。

       ②When I got to the airport,the guests had left.(got to后发生)当我赶到飞机场时,客人们已经离开了。

       2.从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用。①When /While /As we were dancing,a stranger came in.(dance为延续性动词)当我们跳舞时,一位陌生人走了进来。

       ②When /While /As she was making a phonecall,I was writing a letter.(make为延续性动词)当她在打电话时,我正在写信。

       3.当主句、从句动作同时进行,从句动作的时间概念淡化,而主要表示主句动作发生的背景或条件时,只能用 as。这时,as常表示“随着……”;“一边……,一边……”之意。

       ① As the time went on,the weather got worse.(as表示“随着……”之意)

       ② The atmosphere gets thinner and thinner as the height increases.随着高度的增加,大气越来越稀薄。

       ③As years go by,China is getting stronger and richer.随着时间一年一年过去,中国变得越来越富强了。

       ④The little girls sang as they went句子如下:

       That day, I was doing my homework ___ my younger brother was watching TV.Suddenly the doorbell rang.A.when

       B.while C.before D.after

       when 和while都可以表示“两个动作同时发生”的含义,此时它们的不同之处在于while 有表示“对比”的含义,如题目中一人在做作业,一人在看电视,强调两人做不同的事情,有对比的含义

       when和while都可以用在多种行为或情况同时发生。具体情况有下面四种:

       1.我们经常用when和while引导时间状语从句引出一个大的背景,而在这个背景之下发生发生了主句所描述的行为。

       i.e.Somebody broke into the house when/while they were playing cards.他们在打牌的时候有人闯进了房子。

       2.当表示两个长时行为与情况同时发生时,用while而不用when.i.e.While you were reading the paper, I was working.你在读报时,我在工作。

       3.when引导的从句表示在主句中描述的大背景下发生了另一行为。这时不能用while.i.e.I was asleep in my chair when Dora rang to say she wasn't coming home.我睡觉的时候,多利给我打电话说她不会回家。

       4.当表示年龄或是生命中的一段时间时,用when而不用while.i.e.When I was a child we lived in London.我小时候住在伦敦。

第五篇:it用法小结

       小结(2022-12-08 15:57:31)

       标签:教育

       It用法小结

       it在英语语法中属人称代词,意思是“它”,用来指人以外的一切生物和事物。它的用法不仅不简单,而且很复杂。

       一、用于指人以外的一切生物、无生命的东西和事情。

       一般指说话者心目中已经了解或所指的生物、无生命的东西或事情、没有性别的区分;可以是可数名词,也可以是不可数名词,在句子中既可做主语,也可以作宾语。1.指动物和植物。如:

       —Oh,that's Lucy's hat.噢,那是露茜的帽子。

       —It looks like a cat!它看上去像只猫!

       Where's tea grown?It's grown in the southeast of China.

       什么地方种植茶?中国东南部种植茶。2.指代一些无生命的东西。如: Is it your watch?这是你的手表吗?

       Look at the rain!It's heavy,isn't it?看这雨!雨很大,对吗? 3.代替上文提到过的整个事情。如:

       Well,you mustn't play on the road.It's dangerous.哦,你不能在公路上玩。这太危险了!It was hard work,but they really enjoyed it.摘苹果是艰苦活,可他们都乐意去干(它)。

       二、用于指代人。

       1.指代说话者心目中不太清楚的那个人,常在打电话或敲门时用。如:

       —Who was it?是谁(打来的电话)? —Was it Susan?(打电话的)是苏珊吗?

       —Yes,it was.是的,我是。(根据上下句,“it was”也可不译出来。)再如:—Who is knocking at the door?谁在敲门?

       —It's me.是我。

       2.指说话者心目中的那个人。如:

       —Is it your sister,Kate?(那旧照片上的 baby)是你姐姐凯特吧?

       —No!不是。

       —Is it your brother?是你哥哥吧?

       —No!不是。

       —I know—it's you!我知道了,(那)是你。

       3.指代性别不详的婴幼儿或在不计较性别时,也可用it来指人。如 The child smiled when it saw its mother.这小孩一见到母亲就笑了。I don't know who it is.我不知道他是谁。注意:看到这样的句子(或听到这样的话)时,要想一想,不要一看到it就把它译成“它”。)4.在回答用指示代词表示人的特殊问句时,常用it指人。如:

       —Who's that?那人是谁?

       —Is it Kate?是凯特吗?

       —Yes,I think you're right.It's Kate.是的,我想你说对了,是凯特。

       三、用于指时间、距离和自然现象等。1.表示时间。如:

       —What time is it?几点钟?

       —It's ten.十点钟。

       It's summer in Australia now.现在澳大利亚是夏天。特别注意it用于表示时间时还常见于以下两个句型中:(1)It's time(for sb.)to do sth./It's time for sth.译为“是(某人)该干„„的时间了”、“到„„的时候了”。如:

       It's time for supper/to have supper.是吃晚饭的时候了。

       I think it's time for us to start the lesson now.我想现在是我们开始上课的时候了。

       (2)It is /has been +时间段+since +一般过去时。译为“自从„„以来已过了„„(时间)”。此结构可以与另一种句型进行同义句转换。如:

       It has been two weeks since we met last.= Two weeks has passed since we met last.自从我们上次相遇以来,两个星期过去了。

       It's three years since he came here.=It has been three years since he came here.=He has been here for three years.他到这里已经三年了。2.表示距离。如:

       It's half an hour's walk from my home to the school.从我家到学校步行得花半小时时间。

       —Where's the farm,Li Lei?Is it far?李雷,农场在哪里?远吗?

       —No,it's quite near.不,(距)离这很近。3.表示自然现象。如:

       Sometimes it snows and the land is all white.有时下雪,大地一片白。It is very quiet here at the moment.眼下这儿很安静。

       四、用作形式主语。

       英语中常常见到某个句子以it开头,it与其后面的动词不定式短语、动名词短语、名词性从句等相呼应,以表达一个完整的意义。这是一种习惯表达法,这样的句式可避免句子显得头重脚轻。

       1.It+is/was+形容词+(for/of sb.)+动词不定式短语。对于这个句型中究竟用 for还是用of,一般遵循这样的规则:如果形容词仅仅是描述事物的形容词,如:difficult,easy,hard,important,dangerous等用for;如果形容词是描述不定式行为者的性格、品质的,如:kind,good,nice,clever等则用of。如:

       It is interesting to play with snow in winter. 冬季里玩雪是很有趣的。

       It's important for us to keep the water clean.保持水质清洁对我们来说是很重要的。It's very kind of you to say so.你这样说真是太好了。注意:这一句式中的形容词位置也可换用名词;连系动词be也可换用其它连系动词,如feel等。如:

       It's a good habit to get up early and go to bed early.早睡早起是好习惯。

       It must be great fun to fly to the moon in a spaceship.乘宇宙飞船飞往月球一定很有趣。It feels strange to have a twin sister.有个孪生姐妹感觉很奇怪。2.It +will be/is /was +形容词+动名词短语。如: It's bad playing in the street.在街上玩是没好处的。Is it any good trying again?再试一次有用吗? 3.It+is/was+形容词+从句。如:

       It is certain that he will come.他一定会来。It's true that he may fall behind the other students.他真的可能落后于其他同学。It is strange that he should say so.他居然这么说,真是奇怪。

       4.It +is /was +one's turn(duty,pleasure)+to do sth.意为“该轮到某人做某事(做某事是某人的责任、愉悦的事)”。如:

       It's your turn to be on duty tomorrow.明天轮到你值日了。5.It takes(sb.)some time to do sth.意为“(某人)花„„时间做某事”。如 It took me a week to finish reading the book.我花了一周时间看完这本书。

       6.It +cost/costs +sb.+some money +to do sth.译为“某人花多少钱做某事”。如: It cost me 260 yuan to buy the new watch.我买这块新手表花了260元。7.It seems /seemed +从句。译为“看起来好像„„”,此结构可以转换成“seem +动词不定式”形式。如:

       It seems that he is ill.=He seems to be ill.看起来他好像病了。

       [原题再现] ①________is a fact that English is being accepted as an international language.A.There B.This C.That D.It ② In fact________ is a hard job for the police to keep order in an important football match.A.this B.that C.there D.it 答案: ① D ② D

       五、用作形式宾语。

       当句子的真正宾语是动词不定式、动名词或从句时,为避免句子头重脚轻,须将其放在宾语补足语之后,改用先行词it占据其原来的位置。it用作形式宾语的句型为:主语+谓语+it+宾语补足语+动词不定式/动名词/从句。该句型中宾语补足语可由形容词、名词等充当。如:

       He found it not easy to learn a foreign language well.他发现学好一门外语是不容易的。We think it no good reading in bed.我们认为躺在床上看书无益处。I think it necessary that we have the meeting.我认为开这个会是必要的。[原题再现] Don't ________that all those who get good grades in the entrance examination will prove to be most successful.A.take as granted

       B.take this for granted C.take that for granted

       D.take it for granted 答案: D

       六.构成强调句。如:

       It was in the street that I saw Li Ping this morning.今天早晨,就是在街上我看见李明。[原题再现] ________was in 1979________I graduated from university.A.That;that B.It;that C.That;when D.It;when 答案: B 七.构成特殊句式。如:

       It seems as if we should finish it tomorrow.【练习】

       (1)There is a photo on the wall.____ the photo of Lei Feng.A.It B.Its C.It's D.He(高考,1980)(2)Is_necessary to tell his father everything? A.it B.that C.what D.he(MET1987)(3)Is_possible to fly to the moon in a spaceship? A.now B.man C.that D.it(4)I consider____ my duty to help you. A.it B.this C.that D.its(5).It was at four o'clock in the afternoon ____ he and his grandpa reached the museum in Guanghan.A.while B.that C.when D.as 答案:(1)C(2)A(3)D(4)A(5)B(6).I like ____ in the autumn when the weather is clear and bright.(2022全国I)A.this B.that C.it D.one(7).-Do you like ___ here?-Oh,yes.The air,the weather,the way of life.Everything is so nice.(2022全国II)A.this B.these C.that D.it(8).The Parkers bought a new house but ____ will need a lot of work before they can move in.A.they B.it C.one D.which(9).I hate___ when people talk with their mouths full.A.it B.that C.these D.them(10).Joan had often heard____ said that Marley had no money.A.it B.this C.that D.one 答案:C D B A A

       八、it, one和that作替代词的用法及区别

       it, one和that虽然都可以用来替代前面所提到的一个单数名词,以避免重复,但在具体用法上却有不同。简述如下: 1.it代替前面提到的同一事物,该事物既可以是可数名词也可以是不可数名词。[原题再现] The news that they failed their driving test discouraged him, ______? A.did they B.didn't they C.did it D.didn't it 答案: D 2.one代替前面提到的同类事物中的一个。该事物只能是可数名词,前面可以有冠词,也可以被this、that或形容词修饰,其后也可以有定语。[原题再现]-Why don't we have a little break?-Didn't we just have________? A.it B.that C.one D.this 答案: C 3.that代替前面提到的同类事物中特指的一个。该事物既可以是可数名词也可以是不可数名词,要有后置定语,但不可以有前置修饰语。[原题再现] Few pleasures can equal ________ of a cool drink on a hot day.A.some B.any C.that D.those 答案: C

       高考“it”的用法英语题

       历届高考英语单项选择题精选

       (一)“it”的用法

       1.Was it during the Second World War_____ he died?

       A.that

       B.while

       C.in which

       D.then

       (88)2.Is ____ necessary to complete the design before National Day? A.this

       B.that

       C.it

       D.he

       (89)3.I dont think ____ possible to master a foreign language without much memory work.A.this

       B.that

       C.its

       D.it

       (91)4.Does ______ matter if he can’t finish the job on time? A.this

       B.that

       C.he

       D.it

       (91)5.It was not _____ she took off her glasses _____ I realized she was a famous film star.A.when , that B.until , that C.until , that D.when , then

       (92)6.I was disappointed with the film.I had expected ______ to be much better.A.that

       B.this

       C.one

       D.it

       (93)7.It was not until 1920 ______ regular radio broadcasts began.A.while

       B.which

       C.that

       D.since

       (94)8.______is a fact that English is being accepted as an international language.A.There

       B.This

       C.That

       D.It

       (95)9.It was only when I reread this poems recently _____ I began to appreciate their beauty.A.until

       B.that

       C.then

       D.so

       (97)10.I hate _____ when people talk with their mouths full.A.it

       B.that

       C.these D.them

       (98)11.It is the ability to do the job _____ matters not where you come from or what you are.A.one

       B.that

       C.what

       D.it

       (2000)KEYS: 1-5 ACDDB 6-10 DCDBA 11 B

       ’