大家在学习英语的时候,应该会常常使用到whether这个单词,所以了解whether的用法十分有必要,那么whether的用法有哪些?它山之石可以攻玉,下面是编辑为大家收集的whether(精选10篇),希望对大家有所启发。
1. The key issue was whether the four defendants acted dishonestly.
关键问题是4名被告是否存在欺诈行为。
2. It's not a case of whether anyone would notice or not.
这不是会不会有人注意到的问题。
3. Whether such properties are a good deal will depend on individual situations.
这样的地产是否可获得大笔收益还要视具体情形而定。
4. It remains to be seen whether her parliamentary colleagues will agree.
她的国会同僚是否同意,现在还无从知晓。
5. It was touch and go whether we'd go bankrupt.
我们是否会破产还很难说。
6. At first I really didn'tcare whether he came or not.
起先我真的不在乎他是否会来。
7. I couldn't decide whether he was incredibly brave or just insane.
我不能判定他到底是英勇无畏还是精神失常。
8. The jury is out on whether or not this is true.
这是否属实仍未得出定论。
9. It is questionable whether the expenditure on this project is really justified.
该项目的开支是否真的合理还未可知。
10. Some military commanders wavered over whether to support the coup.
军队的一些指挥官在犹豫是否支持政变。
11. It isn't clear whether the plane went down over land or sea.
不清楚飞机是坠毁在陆地上还是海里。
12. One of the journalists queried whether sabotage could have been involved.
其中一位新闻记者询问是否有人为破坏的可能性。
13. They needed more time to consider whether to hold an inquiry.
他们需要更多的时间来考虑是否进行调查。
14. To this day, it's unclear whether he shot himself or was murdered.
至今尚不清楚他究竟是饮弹自杀还是被谋杀。
15. What determines whether you are a career success or a failure?
事业的成败取决于哪些因素?
1.宾语从句是否定句时,只用if,不用whether.
e.g.I wonder if it doesn’t rain.
2.用if 会引起误解,就要用whether.
e.g.Please let me know whether you want to go.(此句如果把whether改成if,容易当成条件 句理解)
3.习惯上宾语从句中的whether 与or not直接连用,就不能换成if;不直接连用时,即构成 whether ...or not的结构时,英语中只用whether;而美语中常用if.所以我们的教学中习惯上 采用whether...or not的说法。
e.g.I don’t know whether or not the report is true.
I don’t know whether the report is true or not.
4.介词后的宾语从句要用whether引导。
e.g.It depends on whether we have enough time.
5.whether 可与不定式连用,而if不与不定式直接连用。
e.g.They don’t know whether to go there.
6.whether 也可引导主语从句、表语从句、同位语从句,还可引导让步状语从句,以上均不能换成 if.
注意:引导主语从句时,习惯上whether从句置于句首时,whether不能换用if,如:
Whether you’ll gain knowledge successfully or not depends on how hard you will work.
你能否真正学到知识,就看你努力的程度如何。
但当采用形式主语It 将主语从句后置时,用Whether 和 if 均可,如:
It’s not clear to me whether /if she likes the present.
7.引导条件从句时,只能用if,而不能用whether.
e.g.Please come to see me if you have time.
if,whether
这两个连接词均含“是否”之意。
if 作“是否”解时,多用于口语,引出宾语从句,不能直接跟or not连用。
whether 多用于书面语中,可与or或or not连用,除引出宾语从句外,还可引出主语从句、表语从句、同位语从句或与不定式连用。
一 名词性从句
1、 主要包括主语从句,宾语从句,表语从句和同位语从句。 一般由that引起,也可由who, what, when, why,which, whom, whether, how 引起。
2、 主语从句很多情况下都可以放到句子后面,而用代词it作形式上的主语。
3、 形式宾语
4、 由名词性关系代词whatever, whoever,whichever 等引起的宾语从句
5、 whether and if 都能引导从句, 但用法有所不同。 当主语从句直接位于句首时,应用whether,而不用if. Whether 后能直接or not, 但if 不能。
Whether he will come or not is not known.
6、 在名词reason后的表语从句必须用that引导, 不可误用because.
The reason why he is often late for class is that hehas the bad habit of getting up late in the morning.
二: 定语从句
1、 引导定语从句的关系词有who, whom, whose,that, when, where, why and which. 在非限制定语从句中, 只可用which, who, whose, where , when., 如果指代前面整个句子,多用which.
2、 当引导定语从句的先行词前有all, any, no,little, much, very first 等词, 或先行词前为形容词最高级所修饰时,或先行词为all, anything, nothing, something,everything 时,从句的引导词只能用that.
3、 as 可做引导词引导定语从句, 多和such, the same 连用。 As 引导的定语从句也可修饰整个句子, 既可放在先行词后,也可放在句子开头。
4、 介词+which/whom/whose从句
5、 代/名+介词+which 从句
6、 同位语从句和定语从句
三、定语从句的关系词
引导定语从句的关系词有关系代词和关系副词,常见的关系代词包括that, which, who(宾格whom,所有格whose)等,关系副词包括where,when, why等。关系代词和关系副词放在先行词及定语从句之间起连接作用,同时又作定语从句的重要成分。
四、定语从句的分类
根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去,非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。
五、关系代词的用法
1、 that 既可以用于指人,也可以用于指物。在从句中作主语或宾语,作主语时不可省略,作宾语可省略。例如:
Mary likes music that is quiet and gentle.玛丽喜欢轻柔的音乐。(that作主语)
The coat (that) I put on the desk is blue.我放在桌子上的那件外套是蓝色的。(that作宾语)
2.which用于指物,在句中作主语或宾语,作主语不可省略,作宾语可省略。例如:
The building which stands near the train station is asupermarket.位于火车站附近的那座大楼是一家超市。(作主语)
The film (which) we saw last night was wonderful. 我们昨天晚上看的那部电影很好看。(作宾语)
3.who, whom用于指人,who 用作主语,whom用作宾语。在口语中,有时可用who代替whom, 也可省略。例如:
The girl who often helps me with my English is fromEngland.经常在英语方面帮助我的那个女孩是英国人。(作主语)
Who is the teacher (whom) Li Ming is talking to? 正在与李明谈话的老师是谁?(作宾语)
六、关系副词的用法
(1)when指时间,其先行词表示时间,在句中作时间状语。例如:
This was the time when he arrived.这是他到达的时间。
(2)where指地点,其先行词表示地点,在句中作地点状语。例如:
This is place where he works.这是他工作的地点。
(3)why 指原因,其先行词是原因,起原因状语作用。例如:
Nobody knows the reason why he is often late forschool. 没人知道他为什么上学总迟到。
英语教师网
if和whether的区别
1.if和whether都可以引导宾语从句,常常可以互换,表示“是否”。如:I don’t know whether(=if)I should tell him.
我不知道是否应该告诉他。
2。差别:
1whether可与or not连用,而if不可以 ○
I don’t know whether he will come or not.
我不知道他是否会来。
2在句首时用whether,而不用if; ○
Whether you take part in or not the result will be the same.
你参不参加结果都是一样的。
Whether he will come is still a question.
他是否会来还是一个疑问。
3在介词后用whether,而不用if; ○
It depends on whether he can solve the problem.
那取决于他能否解决这个问题。
4可以与动词不定式连用 ○
He can’t decide whether to visit her or not.
他决定不出是否去看她。
5表示“如果”时用if,而不用whether。如: ○
If it doesn’t rain tomorrow, I will go to Chongqing.
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一,this,that和it用法
(1)this和that是指示代词,it是人称代词。
(2)距离说话人近的人或物用this, 距离说话人远的人或物用that。如: This is a flower. 这是一朵花。(近处) That is a tree. 那是一棵树。(远处) (3)放在一起的两样东西,先说this, 后说that。如:
This is a pen. That is a pencil. 这是一支钢笔。那是一支铅笔。 (4)向别人介绍某人时说This is„, 不说That is„。如:
This is Helen. Helen, this is Tom. 这是海伦,海伦,这是汤姆。 (5)This is 不能缩写, 而That is可以缩写。如:
This is a bike. That’s a car. 这是一辆自行车。那是一辆轿车。
(6)打电话时,介绍自己用this, 询问对方用that。如: —Hello! Is that Miss Green? 喂,是格林小姐吗? —Yes, this is. Who’s that? 是的,我是,你是谁? 注意:虽然汉语中使用“我”和“你”,但英语中打电话时绝不可以说:I am„, Are you„?/Who are you? (7)在回答this或that作主语的疑问句时, 要用it代替this或that。如: ①—Is this a notebook? 这是笔记本吗? —Yes, it is. 是的,它是。 ②—What’s that? 那是什么? —It’s a kite. 是只风筝。 二.these和those用法
this, that, these和those是指示代词,these是this的复数形式,指时间,距离较近的或下面要提到的人或事;those是that的复数形式,指时间、距离较远或前面已经提到过的人或事物。 ①This is my bed. That is Lily’s bed. 这是我的床。那是莉莉的床。 ②These pictures are good. 这些画很好。 ③ Are those apple trees? 那些是苹果树吗?
在回答主语是these或those的疑问句时,通常用they代替these或those以避免
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模拟试题
重复。如:
④Are these/those your apples? 这些(那些)是你的苹果吗? Yes, they are. 是的,他们是。 一填空
1、 I like _____ pants. _______ pants are red.(这些) 2. I don’t like ____ shoes. ____shoes are too small.(那些) 3. I want _____(这个) sweater. I don’t want________(那个) sweater._____ (那个)is too big.
二、英汉互译。
1、 这支钢笔 2. 那些英语书 3. these erasers 4. that car
三、选择。 ( )1. __________ pen is red. ________ pencil is green. A. this, that B. These, Those C. That, Those D. This, That ( )2. Is _____ a panda over there? A. this B. that C. those D. these ( )3. ________two boys are Mr. Green’s sons. A. This B. These C. That D. those ( )4. __________ two girls are Mary and Linda. A. This B. They C. That D. Those ( )5. _______is Mr. White and _____ is my father. A. This,those B. That,these C. These,these D. This,this
三,There be句型
(1) There be句型主要用以表达“某处(某时)有某人(某物)。” 下面这首歌诀可帮你巧记there be句型结构: There be放句首,主语跟在后。地、时放句末,强调置前头。如: There is a book on the desk. 有时为了强调地点,也可把介词短语放在句首。如: On the desk there is a book. (2)There be句型中的be动词如何确定呢?请先看看下面这首歌诀: Be动词,有三个,am,is还有are。“There be”真特别,不留am只留俩,那就是is还有are。要用is还是are,须看其后的名词是单数还是复数。若是单数或不可数名词用is,否则就用are。如 ①There is a tree behind the house. ②There is some water(水)in the bottle(瓶子)。 ③There are some pears in the box. (3)注意:如果“be”后的主语是由and连接的两个或两个以上的名词,那么be的形式要遵循“远亲不如近邻”的原则。也就是说,“be”的形式是由与它最近的那个名词来确定的。若那个名词是单数或不可数名词要用is,是复数就用are。如:
①There is a book and some pens on the floor. ②There are some pens and a book on the floor. 练习1:用is或are填空
1、 There________many monkeys in the mountain. 2. There_______a beautiful garden in our school. 3. There _________some water in the glass. 4. There __________some bread on the table. 5. _________there any maps on the wall? 6. There __________twenty desks in our classroom.
四,have/has
五.区别except/besides和except for: except:指“(不包括本身在内的)除„„之外”,“-” E.g. He gets up early every day except Sunday. besides:指“(包括本身在内的)除„„之外”,“+” E.g. Five others were late besides me. except for:指前后比较范围是不同类型的 E.g. Except for one old man, the bus was empty.
语法易错点归纳总结 [第一类] 名词类 1. 这些女老师们在干什么?
[误] What are the woman teachers doing? [正] What are the women teachers doing?
[析] 在英语中,当一名词作定语修饰另一名词(单或复数形式)时,作定语的名词一般要用其单数形式;但当man,woman作定语修饰可数名词复数形式时,要用其复数形式men,women. 2. 房间里有多少人?
[误] How many peoples are there in the room? [正] How many people are there in the room?
[析] people作“人、人们”解时,是个集合名词,其单复数同形。 3. 我想为我儿子买两瓶牛奶。
[误] I want to buy two bottle of milk for my son. 7. There__________a bird in the tree. 8. There __________some trees near the house. 9. ________there a cup of tea on the table? 10. There_________some apple juice in the glass. 11. There_____a bed and two chairs in Betty's room. 12. There __________some milk in the bottle. 13. There __________some children in the park. 14. There __________an ice cream in the boy’s hand. 15. There__________a teacher and many students in our classroom. 16. There_______many birds and a lion in the forest. 17. There__________an orange on the table. 18. There__________many things over there 19. There__________an eraser in the pencil-case. 20. There__________a football match on television this evening
[正] I want to buy two bottles of milk for my son. [析] 表示不可数名词的数量时,常用“a / an或数词 +表量的可数名词 + of + 不可数名词”这一结构, 其中当数词大于1时,表量的可数名词要用其复数形式。 [第二类] 动词类
4、 你妹妹通常什么时候去上学?
[误] What time does your sister usually goes to school? [正] What time does your sister usually go to school?
[析] 借助助动词do(或does)构成疑问句或否定句时,句中的谓语动词用其原形。 5. 琳达晚上经常做作业,但今晚她在看电视。 [误] Linda often do her homework in the evening,but this evening she watching TV. [正] Linda often does her homework in the evening,but this evening she is watching TV. [析] 在初一英语学习阶段,我们接触到了两种主要时态:一般现在时和现在进行时。一般现在时表示经常的或习惯性的动作,常和often,usually,sometimes 等时间状语连用。在一般现在时的句子中,若主语是第三人称单数,谓语动词要用其第三人称单数形式。现在进行时表示现阶段正在进行或发生的动作,现在进行时由be(am / is / are) + ving形式构成。 6 这双鞋是红色的。 [误] This pair of shoes are red. [正] This pair of shoes is red. [析] 在shoes,trousers,gloves,glasses等表示成双成对的衣物或工具名词前用pair(表计量)修饰时,谓语动词的形式由pair的单复数形式来决定。 [第三类] 代词类
7、 这张票是她的,不是我的。 [误] This is hers ticket. It’s not my. [正] This is her ticket. It’s not mine. [析] 物主代词有形容词性物主代词和名词性物主代词之分。形容词性物主代词之后一定要接名词,而名词性物主代词之后不需接任何词。
8、 吴老师教我们英语。 [误] Miss Wu teaches our English. [正] Miss Wu teaches us English. [析] teach sb. sth.中的sb.作teach的宾语,因此当sb.为人称代词时要用其宾格形式。 [第四类] 介词类
9、 你能找到这个问题的答案吗?
[误] Can you find the answer of this question? [正] Can you find the answer to this question?
[析] 英语中用“the answer to „”表示“„„的答案”。类似结构还有the key to the door,the way to the zoo 10. 格林先生星期六上午来这里。
[误] Mr Green will come here in Sunday evening. [正] Mr Green will come here on Sunday evening. [析] 表示在上午、下午等时,介词要用in;而表示在具体的某天上午、下午时,介词要用on. 11. 那个穿着红裙子的小女孩是我们老师的女儿。 [误] That little girl on a red skirt is our teacher’s daughter. [正] That little girl in a red skirt is our teacher’s daughter. [析] 用介词表示“穿戴衣物”时,只能用in,其他介词没有此用法。 [第五类] 副词类 12. 莉莉,你为什么不回家呢? [误] Lily,why don’t you go to home? [正] Lily,why don’t you go home?
[析] come,go 等后接here,there,home等地点副词时,地点副词前不加to。 [第六类] 连词类
13、 我喜欢语文和英语,但我不喜欢体育和历史。
[误] I like Chinese and English,but I don’t like P.E.and history. [正] I like Chinese and English,but I don’t like P.E.or history. [析] 在肯定句中并列成分之间用and来连接;而在否定句中,并列成分之间的连接需用or。 [第七类] 冠词类
14、 乘飞机去北京花了史密斯一家人一个小时。 [误] It takes Smiths a hour to go to Beijing by a plane. [正] It takes the Smiths an hour to go to Beijing by plane. [析] 1.表示“„„一家人”用结构“the + 姓氏复数”; 2.our 一词的第一个字母不发音,它是以元音音素开头的,所以“一小时”要用 an hour;-§ 3.用介词by表示“乘坐”某种交通工具时,交通工具名词前不加任何冠词。 [第八类] 句法类
15、 ――你不是学生吗? ――不,我是学生。 [误] ――Aren’t you a student? ――No, I am.
[正] ――Aren’t you a student? ――Yes, I am. [析] 对否定疑问句的回答是用Yes还是用No,这取决于实际情况:如果事实是肯定的,就用Yes表“不”;如果事实是否定的,就用No表“是的”。
中考真题练习
1、 — What about Mr. Black's speech? —Wonderful! There were ____________ people there. A. a large number of B. much C. a great deal of D. lots 2. My uncle went to Australia last year. We haven't seen him_______. A. since almost a year B. from almost a year on C. after almost a year D. since almost a year ago 3. — What would you like for _______ breakfast, Mr. Scott? —Three pieces of bread with_______ cup of black tea, please. A. a; a B.不填; the C. a; the D.不填;a 4. — What are you looking for, Michelle? —My cousin's MP3 player. It _______ right here, and now it's_______. A. has been; gone B 。was; gone C. was; going D. is; going 5. — Can your brother make model airplane? —Yes, this week he ______ a new model. A. builds B. is built Chad built D. is building 6. Mr. White is of great help; you ______ let him go. A 。had not better B. had better don' t C. had better not D. had no better 7. My grandfather wants ______ around the world because he enjoys ______ new places. A. travelling; seeing B. to travel; to see C. to travel; seeing D. travelling; to see 8. Mr. Watson won’t be here next week, and______. A. neither his wife will B. neither his wife won' t C. his wife won' t neither D. his wife won' t either
【释义】
英 ['weeə(r)] 美 ['weeər]
conj.是否;不管;无论
【词组短语】
whether if 是否
discussing whether 讨论是否 ; 在讨论是否
Whether continues 是否继续下去
Whether leave 是否该
Whether law 否则
Whether authorized 是否预授权
Side whether 否侧
Whether in 在否
Whether Black 不管黑猫
【词义辨析】
whether, if
这两个词的共同意思是“假使,如果”。
1.if从句可以表示希望; 而whether从句单纯表示事实。
2.if不能用在介词之后的间接疑问句中; 而whether可以。
3.if不能用在“to+动词原形”的前面; 而whether可以。
4.if不能引导主语、表语从句; 而whether可以。
【双语例句】
用作连词 (conj.)
I'm uncertain whether to go or not.
我不能肯定去还是不去。
His nationality isn't relevant to whether he's a good teacher.
他的国籍与他是否是位好老师无关。
Little does he care whether we live or die.
他一点也不管我们是死是活。
Air whether in the gaseous or liquid state is a fluid.
空气,无论是气态的还是液态的,都是一种流体。
I'd always support my country, whether it was right or wrong.
我会一直支持我的国家,无论它是对是错。
Sir Isaac Newton said that time was absolute,that it occurred whether the universe was here or not.
爱萨克·牛顿爵士说时间是绝对存在的,无论宇宙存在与否它都存在。
【21世纪大英汉词典】
whether ['hweeə]
conj.
是否:
to ask whether she will help
问她是否能帮帮忙
不管…还是…:
Whether he drives or (whether he) flies, he'll be on time.
不管他坐车来还是坐飞机来,他都将准时到达。
(两者中的)任何一个:
taxation to support the war, whether just or not
支持正义或非正义战争的赋税
pron.
[古语](两者中的)哪一个;(两者中的)任何一个
adj.
[古语](两者中的)哪一个;(两者中的)任何一个
短语:
whether…or…
是…还是…;无论是…还是…;或者…或者…;不是…就是…
不管…还是…
whether or no (或 not)
不管怎样,无论如何
不论是否
是否
whether的用法1:whether用作连词,意思是“是否,是不是”,可引导名词从句或动词不定式短语。
whether的用法2:whether还可引导让步状语从句,意思是“不管,无论”,从句中通常用一般现代时代替将来时。
1.whether和if都可以表示“是否”,引导宾语从句。
You may wonder whether/if it is true. 你可能想知道它是否是真的。
2、当引导的从句中出现or not时,通常用whether,而不用if。
I'm wondering whether you will come to my party or not tomorrow. 我想知道你明天是否来参加我的聚会。
3.to+动词的结构(即动词不定式)前只能用whether。
Have you decided whether to accept the offer yet?你决定好是否接受那个报价了吗?
4、介词prep.后只能用whether。
We're discussing the problem of whether to accept the offer.我们正在讨论关于是否接受报价的问题。
5、当宾语从句提到句首表示强调时,只能用whether引导,不能用if。
Whether they can finish the work on time is still a problem. 他们是否能按时完成他们的工作还是个问题。
6、只能用whether引导主语、表语或同位语从句,不可用if。
It was a question whether the girl should get married. 这个女孩是否应该结婚曾是个问题。
The question is whether they will support the plan. 问题是他们是否会支持这个计划。
The question,whether we need it,has not yet been considered. 我们是否需要它这个问题还没有被考虑到。
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Whether用法归纳
Whether和if都有“是否”的意思,那么这两个词在使用时有什么异同呢?又有哪些注意事项呢?下面把高中阶段应该掌握的内容总结如下:
1.引导宾语从句表示“是否”时,两者可以互换。
I don`t know if /whether he is satisfied with my work.但 用if引导宾语从句可能会引起歧义时,应避免使用if而用whether.
试比较:please let me know if you want to go。 上句可以理解为“宾语从句”,即:请告诉我,你是否想去也可以理解为“条件从句”,即:如果你想去,请告诉我一声。
2.在不定式前,只能用whether 不用if The question is whether to go or stay。 问题是去还是留下。 3.在介词后只能用whether。不用if It depends on whether he is ready or not. 这取决于他是否做好了准备。 4 与or nut直接连用时,只用whether不用if
I asked him whether or not he was coming 我问他是否要来。 5.引导主语从句且放到句首时用whether不用if。
Whether he will come or not still remains a question.他是否要来仍然是个问题。
6.引导同位语从句时用whether不用if。 They asked me the question whether the work was worth doing.他们问了我这个问题,这个工作是否值得做。 7.引导表语从句时用whether不用if.
The question is whether we should go on with the work.问题是我们是否应该继续做这项工作。 8.引导宾语从句且放到句首时用whether不用if
Whether he has stolen the money ,I can`t say. 他是否偷了钱,我说不准。
9.某些动词如discuss后面的宾语从句用whether 不用if.
They are discussing whether it is necessary for them to do it soon.
他们正在讨论他们是否有必要很快去做这件事。