as 用法归纳和练习题
一、as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as/so．．．as．．．结构中的第一个as是副词，作“和／与．．．(不)一样”解。
Jack is as tall as his father．
He doesn't speak English as／so fluently as you．
二、as作介词。
1．作“如，像”解。They got united as one man．
2．作“充当，作为”解。eg：As a writer，he was famous．
三、as作连词，常用来连接主句和状语从句。
1．引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。eg：
He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。
I was startled as he opened the door．他一开门，我吓了一跳。
as作连词，相当于when。eg；
As a little boy (When he was a little boy)he began to learn to play piano．
2．引导原因状语从句，作“因为，由于”解，与because的用法相近。eg；
I must stop writing now，as I have rather a lot of work to do．
3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。例eg：
As in your country，we grow wheat in the north and rice in the south．正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句)
When at Rome，do as Romans do．入乡随俗。(方式状语从句)
Leave it as it is. 保持原状，不要动它。
4．引导让步状语从句，作“虽然，尽管”解。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。eg；
Strange as it may seem，it is true．
尽管这事看上去很奇怪，但却是真的。
Try as he might，Tom could not get out of the difficulties．
不管怎样努力，汤姆还是摆脱不了困境。
Child as he is, he know s a lot.
Much as I like you, I will not marry you.
我虽然很喜欢你，可是不愿与你结婚。
四、as作关系代词。
1．引导限制性定语从句，用在“such．．．as”,“the same．．．as”，“as．．．as” “so… as”等结构中，常译作“像．．．一样的人(或物)”，“凡是．．．的人(或物)”。例eg：
He wished to be such a man as Lei Feng was．他曾希望做一个像雷锋那样的人。
My hometown is no longer the same as it was．我的家乡再也不像过去一样了。2．引导非限制性定语从句，用来指代它前面的整个句子(即先行句)。这个分句可以位于句首、句中或句末。
As is well known，oceans cover more than 70％of the earth．
We have found such materials as are used in their factory.
五、含as的固定词组的用法
1．as soon as作“一…就”解，引导时间状语从句。
As soon as I get to Beijing，I'll write to you．
2．as／so long as作“只要”解，
As／So long as you study hard，you'll make progress．
只要你努力，你就会取得进步。
3．as if／though常用来引导方式状语从句，作“好像，仿佛”解。如果从句中讲的是非真实情况，则用虚拟语气。She loves the child as if／though he were her own．
As if／though也可用来引导表语从句，常用在“It appears／looks／seems．．．+as if／though”句型结构中。It appears as if／though it is going to clear up．
It seems as if／though he knew nothing about it.他好像对此事一无所知。
4．as to, as for, 作“关于，至于”解。as with “和…也一样” eg；
There is no doubt as to/for his honesty．
as with (1)=as is often the case with...“那对......是常有的事”
e.g. As with young birds, the time comes for the young to leave.
(2)=as it\'s the same with...“正如......一样”
e.g. As with running, learning English needs will.
正如跑步一样，学习英语需要意志。
5．as much／many as作“多达．．．”，“达到．．．之多”解。eg：
He can earn as much as 5000 dollars a month．他每月能挣5000美元。
6．so／as far as I know作“就我所知”解，在句中作插入语。eg：
As／So far as I know，he will come here next Monday．
7．as a result，as a result of表示“由于．．．的结果”。eg：
She died as a direct result of the accident．她的死是那次事故的直接结果。
8，as well为“也，还”之意。as well as , 并列连词, 连接并列成分.
eg：Come early，and bring your brother as well．早点来，把你的弟弟也带来。
He can speak English as well as French.他会说英语和法语
9．so as to，so．．．as to若跟动词原形，表示目的或结果。eg：
He studied hard so as to pass the exam．他努力学习以便通过考试。(表示目的) 10．as…, so…像…那样，…也就…；随着…，也就…
As you sow,so will you reap. 种瓜得瓜，种豆得豆。
11．as a matter of fact(其实),as a whole, as a rule, as usual, as it is/was(事实上/既然如此), as it were(似乎；可以说是)；as good as （和……一样好；几乎；差不多）
等
12、so…that;such…that的用法
1、so + 形容词/副词+ that + 从句，如：
This story is so interesting that I want to read it again.
He spoke so quickly that I couldn't follow him.
2、so+形容词/副词+a/an+单数可数名词+that+从句
She is so lovely a girl that everyone loves her.
3、such+a/an+形容词+单数可数名词+that+从句，如：
She is such a lovely girl that everyone loves her.
4、such(+adj.)+复数可数名词/不可数名词+that+从句，如：
He showed such concern that people took him to be a relative.(take sb. to be 或take sb. as 把某人看作…)
巩固练习
1. Our neighbor has _____ ours.（北京2003）
A. as a big house as
B. as big a house as
C. the same big house as
D. a house the same big as
2. What a table! I’ve never seen such a thing before. It is _____ it is long.
A. half not as wide as
B. wide not as half as
C. not half as wide as
D. as wide as not half
3. I’d like to arrive 20 minutes early _____ I can have time for a cup of tea.
A. as soon as
B. as a result
C. in case
D. so that
4. The more I think about him, the more reasons I find for loving him _____ I did.（
A. as much as
B. as long as
C. as soon as
D. as far as
5. John is the tallest boy in the class, _____ according to himself. (安徽2005) （five foot/feet eight 五英尺八英寸）
A. five foot eight as tall as
B. as tall as five foot eight
C. as five foot eight tall as
D. as tall five foot eight as
6. —Did you take enough money with you?
—No. I needed _____ I thought I would.（2006全国II）
A. not so much as
B. as much as
C. much more than
D. much less than
7. My English teacher’s humor was ____ make every student burst into laughter.
A. so as to
B. such as to
C. such that
D. so that
8、They play all kinds of instruments and sing ____.
A. also
B. either
C. as well
D. as well as
9. Tom, ____ Jane and Rose, ____ going to the farm on foot.
A. as long as；is
B. as well as；are
C. as long as；are
D. as well as；is
10. They travel at full speed by day ____ .
A. and night
B. and by night as well as
C. as well at night
D. as well as by night
11. Mrs Black writes ____, if not better than，her husband.
A. as well as
B. so well
C. so well
D. as well
参考答案：BCDAB ABCDD A
should 用法讲与练 should 一词在中学英语课本中出现频率很高。它的用法灵活、含义丰富，因而一直是历年中考关注的热点。现将其具体用法分述如下： 一 . should 作为助动词shall 的过去式，可以在间接引语中与第一人称主语搭配，表示过去将来时间。例如： The group leader announced that we should （= would ）begin to work soon. 小组长宣布：我们不久就开始工作。 A week ago，I told him that I should （= would）go to Beijing the next day. 一个星期以前，我告诉他我第二天就去北京。 二 . should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和ought to，be supposed to 互换使用。例如： You should （= are supposed to ）complete your test in time. 你们应该按时做完你们的实验。 You should （= ought to ）tell your mother about it at once. 你应该立即把此事告诉你妈妈。 In sum，theory should be combined with practice. 总之，理论应该与实验相结合。 三 . should 作为情态动词，可以用在条件状语从句中，表示语气较强的假设，译作“万一”、“竟然”，这时也可将should 置于从句之首，即将should 放在主语前面，而省略从属连词if .例如： If you should fail to come，ask Mrs Chen to work in your place. （= Should you fail to come，ask Mrs Chen to work in your place. ）万一你来不了，就叫陈夫人代替你。 If anyone should come，say I am not at home. （= Should anyone come，say I am not at home. ）万一有人来访，就说我不在家。 If it should rain tomorrow，I wouldn't go. （= Should it rain tomorrow，I wouldn't go.） 万一明天天下雨，我就不去了。 四 . should 作为情态动词，可以表示谦逊、客气、委婉之意，译为“可……”、“倒……”。
as的用法 一．用作介词： 1.“作为，担任”；“似，像” He works as a teacher in the school. She behaved toward him as a mother. 2.在句子中可充当状语、定语、宾语补足语和表语： As a newspaper reporter, he is naturally very much interested in the hero. He got a position as teacher of English. We regard him as a shining example for us to learn from. The world is as a stage. He was a guest and was treated as such. 二．用作副词，表示程度，主要用于as…as →如同，像。 His face is as black as coal. 三．用作连接词，引导状语从句。 1.引导比较状语从句 We will give you as much help as we can. 2.引导让步状语从句 Child as he is, he can speak several foreign language. Try as I might, I couldn't lift the stone. 3.引导时间状语从句，可有just 修饰。 Just as she was about to speak, she was handed a note. 4.引导原因状语从句 As Jane was the eldest, she looked after the others. 5.引导方式状语从句 She cooks a chicken as her mother did. Please do it as I said. 四．可引导关系代词： 1.引导限定性定语从句时，常与such或same连用。 Such people as you describe are rare nowadays. I feel just the same as you do. 2.也可引导非限定性定语从句，可放前，可放后。 I am working the night shift, as you know. 五．一些固定搭配。 1.as long as , as soon as , as long as 只要…就；一…就 As soon as I left, I burst out laughing. 2.as if 和as though引导方式状语从句用虚拟语气。 I remember it as if it happened yesterday. 3.as regards , as to , as for 表示关于，至于 He has no complain as to salary. 4.as well , as well as :“也，又” She wants a pen as well as a pencil 5.so as to 与so …as to 用作目的或结束 We hurried so as to get there in time.
as"随着" As online technology develops and ideas about academia change, there are many different opinions about whether it should still be mandatory for students to attend classes. As travel becomes increasingly accessible, more and more people take long vacations every year. But as I indicated in the above paragraph I still have meaningful conversations with friends on a regular basis. As I said above, students are likely to communicate with their classmates inside of the lecture hall. as“因为” Even if I wanted to follow his example, doing so would be impossible where I live, as the streets are too crowded for casual walking. The type of role-models we might emulate, though, depends on what programs we choose to consume, as both positive and negative messages are being broadcast all the time. This is not a problem, though, as both of our children go directly to a local community center when their classes are over. Their participation in these programs sets my mind at ease, as without access to the community center they would spend this time home alone or perhaps walking the streets. This situation compares favorably to a friend of mine who lives in a small town and is forced to hire an expensive babysitter to watch her children when they get home from school, as there are no meaningful activities for them to engage in when their classes finish. It was a traumatic experience as it happened in the middle of the night and we lost most of our belongings. as引导的倒装
should用法归纳 一、Should 表示义务、责任、常译为“应当”，“应该”，或表示一种 估计的情况，译成“按理应当”，“估计......”。 Why should I pay him? 为什么我该付给他钱? They should be there by now，I think. 我估计，他们现在到那儿了。 二、用于成语中I should like to......“我想(做)......” I should like to ask the teacher a question. 我想问老师一个问题。 三、shouldn’t ：不应该（表示责备）；应该不，应该没有（表示推测）。如： You shouldn't be so lazy.你不应该这么懒惰。 There shouldn't be any problem with your listening.你的听力应该没有问题了。 用should 或shouldn't 填空。 1. All of us ________study hard and learn English well. 2. As a student, you_______ eat in class. 3. You _______speak to your parents like this ,you must be polite (有礼貌) 4. You __________eat less and take more exercise if want ot be healthier and stronger.
5. My mother is very tired after work, I________ do some housework for her. had better(常简略为'd better)是一固定词组，had better"最好"，用于表示对别人的劝告、建议或表示一种愿望。其用法有以下几点： 一、had better后面必须跟动词原形。 had better后跟动词原形(即不带to的不定式)，构成had better do sth.句型。 这里的had不能用have来替换。如： You'd better go to hospital at once.你最好立即去医院看病。 Tom, you'd better go there today.汤姆，你最好今天去那儿。 二、主语不论是第几人称，句子不论是什么时态，都要用had better 的形式。如： Now you(he，we) had better listen to the teacher.你(他，我们)现在最好听老师讲。 三、had better的否定式。如： 常用的否定形式是将否定副词not直接放在had better的后面。如：You had better not miss the last bus.你最好不要错过末班公
情态动词should的用法 情态动词should和can ，may ，must一样，没有人称和数的变化，有词意，但都不能单独作谓语，必须和后面的动词原形一起构成谓语。基本意思是“应当，应该”，常用来表示建议或命令等。如： You should work harder. 你应该更努力地工作。 否定式和疑问式的构成与can ，may ，must一样。如： You shouldn’t play soccer in the street.你们不应该在街上踢足球。 Who should pay the taxi driver? 谁应该付出租车钱？ 注意： 常用句型You should /shouldn’t do sth 表示“建议某人（不）做某事”。其他表示“建议”的句型还有：Why not do sth? /Why don’t you do sth? /How about doing sth? /What about doing sth? /It’s a good idea to do sth /You’d better do sth等。 should作为情态动词用，常常表示意外、惊奇、不能理解等，有“竟会”的意思，例如： How should I know? 我怎么知道？ Why should you be so late today? 你今天为什么来得这么晚？ should有时表示应当做或发生的事，例如： We should help each other.我们应当互相帮助。 我们在使用时要注意以下几点： 1. 用于表示“应该”或“不应该”的概念。此时常指长辈教导或责备晚辈。例如： You should be here with clean hands. 你应该把手洗干净了再来。 2. 用于提出意见劝导别人。例如： You should go to the doctor if you feel ill. 如果你感觉不舒服，你最好去看医生。 3. 用于表示可能性。should的这一用法是考试中常常出现的考点之一。例如： We should arrive by supper time. 我们在晚饭前就能到了。 She should be here any moment. 她随时都可能来。 1. We _________ keep the new traffic law(交通法). A. may B. should C. can D. need 2.I’d like to buy a new shirt , but I don’t know __________ . A. where could buy it B. I should take which C. which I should take D. where can I get it 写出同义表达 Why not have a rest? (1) Why _______ ________ have a rest? (2) You’d _________ _________ a rest. (3) You _______ ________ a rest. (4) ________ _________ having a rest?
关于"as" 的用法小结 我在浏览其他网站时发现了有关AS用法的总结，自己觉得非常比较适合我自己，现将他贴出来共享。非常感谢总结用法的老师们！！！ As的用法小结 as可以作连词、介词及关系代词和副词。现将其用法小结如下: （一）、as作连词的用法: 1.作“在-------期间，当----的时候”引导时间状语从句.注意与when、while的用法区别。 ①下列情形时,只用as, 而不用when或while。 1)用于表示同一个人的两种动作交替进行,指一边----一边. 如: The girl sings as she goes to school. He looked behind occasionally as he went forward in the forest. 2)表示两个同步发生的动作或行为,意思是随着-----的发展.如: As time went on / by, she became more and more beautiful . As children get older, they become more and more interested in everything. 3)表示两个短暂行为或事情几乎同时发生.如:I watched her as she read the book. I thought of it just as you opened your mouth. Just as the flying worm hit her face, she gave a loud cry. 4)接在名词后面表示某一个年龄段时.如: As a young man, he was active in sports. ②when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。如:When I was at college, I could speak several foreign languages. When the clock struck twelve, I had slept for 2hours. ③while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如:Work while you work. Play while you play. 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。如: As he’s been ill for ages, I will help him. As / Since you’re not feeling well, you may stay at home. As he wasn’t ready , 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。如: Do as I told you. 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。如:They helped the old as much as possible. I don’t speak English so/ as well as she does. 5. 表示虽然,尽管等,引导让步状语从句,常用倒装语序,模式为: adj. /adv. / n.+as +主语+谓语+主句。如: Young as he is, he knows much. Tired as they were, they walked on.
s h o u l d用法归纳与练习 h b e t t e r 集团企业公司编码：（LL3698-KKI1269-TM2483-LUI12689-ITT289-
should用法归纳 一、Should表示义务、责任、常译为“应当”，“应该”，或表示一种估计的情况，译成“按 理应当”，“估计......”。 WhyshouldIpayhim为什么我该付给他钱 Theyshouldbetherebynow，Ithink.我估计，他们现在到那儿了。 二、用于成语中Ishouldliketo......“我想(做)......” Ishouldliketoasktheteacheraquestion.我想问老师一个问题。 三、shouldn’t：不应该（表示责备）；应该不，应该没有（表示推测）。如： Youshouldn'tbesolazy.你不应该这么懒惰。 Thereshouldn'tbeanyproblemwithyourlistening.你的听力应该没有问题了。 用should或shouldn't填空。 1.Allofus________studyhardandlearnEnglishwell. 2.Asastudent,you_______eatinclass. 3.You_______speaktoyourparentslikethis,youmustbepolite(有礼貌) 4.You__________eatlessandtakemoreexerciseifwantotbehealthierandstronger. 5.Mymotherisverytiredafterwork,I________dosomehouseworkforher. hadbetter(常简略为'dbetter)是一固定词组，hadbetter"最好"，用于表示对别人的劝告、建议或表示一种愿望。其用法有以下几点： 一、hadbetter后面必须跟动词原形。 hadbetter后跟动词原形(即不带to的不定式)，构成hadbetterdosth.句型。 这里的had不能用have来替换。如： You'dbettergotohospitalatonce.你最好立即去医院看病。
一、作副词，意为“相同地”，“同样地”。例如： They don’t have as many airplanes. 他们没有同样多的飞机。 二、作连词， 1. 引导时间状语从句 as与when，while都是引导时间状语从句的从属连词，含义都是"当……的时候"。但它们有区别: (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。从句的动作可以与主句的动作同时发生，也可以先于主句的动作发生。例如: John was having his dinner when I saw him. 当我看到约翰的时候，他正在吃饭。 She can write only when the baby is asleep. 只有婴儿睡着的时候，她才能写作。 (2). while常表示一段较长的时间或一个过程，强调主句谓语动词与从句谓语动词同时发生或在从句动作过程中发生。例如: We must strike while the iron is hot. 要趁热打铁。 While we were reading, the teacher came in. 我们正在读书的时候，老师走了进来。 (3). 但属下列情形时，只用as, 而不用when或while。 ①用于表示同一个人的两种动作交替进行,指“一边……,一边……”。例如:
The girl dances as she sings on the stage.那个女孩在舞台边唱歌边跳舞。 He looked behind from time to time as he went forward. 当他朝前走时，不时地向后看。 ②表示两个同步发展的动作或行为,译为“随着……”。例如: As time went on / by, she became more and more worried. 随着时间的流逝，她变得越来越焦虑。 As he grew older, he became more intelligent. 随着他年龄的增长，他变得更有才智了。 ③表示两个短促行为或事件几乎同时发生。例如: I thought of it just as you opened your mouth. 恰好在你开口时，我想到了它。 Just as the flying worm hit her face, she gave a loud cry. 恰巧在飞虫撞到她脸上时，她大哭起来。[小精灵儿童网站] 2. 引导原因状语从句 as，because，since都可以表示因果关系，连接原因状语从句，含义是“因为，由于”，但它们有区别：because表示的语气最强;as 一般放在句首，语气较弱，较口语化;since常常用在书面语中，表示多为对方已知的、或稍加分析便可得知的原因，有时可译作“既然”。例如： I do it because I like it. 我做这件事是因为我喜欢。
As 的用法归纳 as的用法很多，又比较复杂，本文就此作一归纳： 一、作副词，意为“相同地” ，“同样地”。例如： They don'thave as many airplanes. 他们没有同样多的飞机。 二、作连词， 1. 引导时间状语从句 as与when, while都是引导时间状语从句的从属连词，含义都是"当..... 的时候" 。但它们有区别: (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。从句的动作可以与主句的动作同时发生，也可以先于主句的动作发生。例 如: John was having his dinner when I saw him. 当我看到约翰的时候，他正在吃饭。 She can write only when the baby is asleep. 只有婴儿睡着的时候，她才能写作。 (2) . while 常表示一段较长的时间或一个过程，强调主句谓语动词与从句谓语动词同时发生或在从句动作过程中发生。例如: We must strike while the iron is hot. 要趁热打铁。 While we were reading, the teacher came in. 我们正在读书的时候，老师走了进来。 (3) . 但属下列情形时，只用as, 而不用when 或while。 ①用于表示同一个人的两种动作交替进行，指“一边……，一边……”。例如: The girl dan ces as she si ngs on the stage那个女孩在舞台边唱歌边跳舞。 He looked behind from time to time as he went forward. 当他朝前走时，不时地向后看。 ②表示两个同步发展的动作或行为,译为“随着…… ”。例如: As time went on / by, she became more and more worried. 随着时间的流逝，她变得越来越焦虑。 As he grew older, he became more intelligent. 随着他年龄的增长，他变得更 有才智了。 ③表示两个短促行为或事件几乎同时发生。例如: I thought of it just as you opened your mouth. 恰好在你开口时，我想到了它。 Just as the flying worm hit her face, she gave a loud cry. 恰巧在飞虫撞到她脸上时，她大哭起来。 2. 引导原因状语从句 as，because, si nee都可以表示因果关系，连接原因状语从句，含义是“因为，由于”，但它们有区别：because表示的语气最强；as 一般放在句首，语气较弱，较口语化；since 常常用在书面语中，表示多为对方已知的、或稍加分析便可得知的原因，有时可译作“既然” 。例如： I do it because I like it. 我做这件事是因为我喜欢。 Since many of the customers work during the day, Billy has to collect the money at night. 因为许多顾客白天上班,所以毕利只好晚上去收钱。 As she has been ill perhaps she'll need some help. 她由于生病可能需要些帮
英语中should的用法归纳 一、Should 表示过去将来时，即从过去观点看将来要发生的是，多用于间接引语中。 We thought that we should never see you again. 我们想我们再也看不到你了。 The BBC weather report this morning said that we should have rain.今天早上，BBC电台天气报告说，今天有雨。 二、Should 表示义务、责任、常译为“应当”，“应该”，或表示一种估计的情况，译成“按理应当”，“估计......”。 Why should I pay him？为什么我该付给他钱？ They should be there by now，I think. 我估计，他们现在到那儿了。 Should 用于完成时态，表示对过去发生的动作的一种推测，译成“应该已经......”。
You should have washed the wood. （But you haven't.）你应该把伤口清洗了。（然而你没有） 三、Should 用于虚拟语气中。 （1）用于It is necessary （important，strange.。。that.。。）中，在美国英语中should 常省去。 It is important that we （should）learn English well. 我们学好英语很重要。 （2）用于It is ordered （suggested）that.。。中，而在美语中should常省去。 It is decided that we （should）finish our work in a week.决定我们要在一周之内完成我们的工作。 （3）用于表示命令、请求、建议、决定等词后面的宾语从句中，在美国英语中should常省去。 He wrote，suggesting that Mr. Wang （should）come to Beijing. 他信中建议王先生到北京来。 The commander ordered that the city （should）be taken in five days.司令员下令必须在五天之内占领这座城市。 （4）should用于表示命令、请求、建议、决定等词后面的表语从句，同位语从句中，在美国英语中should 常省去。
1. shall在疑问句中的用法。在疑问句中用于征求对方意见，主要用于第一人称(在英国英语中，也用于第三人称)，其意为“要不要”、“…好吗”：Shall I get you a chair for you? 要不要我给你拿把椅子来?What shall we do this evening? 我们今天晚上做什么呢？Shall the boy come at once? 要不要这孩子马上来? 2. shall在陈述句中的用法。在陈述句表示说话者的允诺、告诫、威胁、命令、规定、必然性等，主要用于第二、三人称：You shall suffer for this. 你会为此事吃苦头的。(表威胁)That day shall come．那一天一定会来。That day shall come(表必然性)Tell him that he shall have the book tomorrow. 告诉他这本书明天给他。(表允诺)Persons under 18 shall not be employed in night work．不满十八岁的人不得雇佣干夜间工作。(表规定)【注】有时用于第一人称，表示决心：【注】有时用于第一人称I shall return. 我一定回来。(表示决心) 。 3. should表示义务或责任。其意为““”：We should learn from each other. 我们应该互相帮助。We should help the aged. 我们应该帮助老人。You should pay your debts. 你应该还债。You should pay your debts. 4. should 表示建议或劝告。其意为“应该”：You should give up smoking. 你应该戒烟。You should go and ask your teacher. 你应该去问问老师。【注】有时语气较强，含有命令的意味：You should leave at
as...as的用法 as...as意为"和……一样"，表示同级的比较。使用时要注意第一个as为副词，第二个as 为连词。其基本结构为：as+ adj./ adv. +as。例如： (1)This film is as interesting as that one.这部电影和那部电影一样有趣。 (2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。 其否定式为not as/so +adj./ adv. +as。例如： This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。 若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。例如：Your bag is twice as expensive as mine.你的袋子比我的贵一倍。 几个关于as...as的常见句型： (1)as...as possible Please answer my question as soon as possible.请尽快回答我的问题。 (2)as...as usual/before She looks as pretty as before.她看起来和以前一样漂亮。 (3)as long as... (引导条件状语从句) It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。 (4)as far as He walked as far as the railway station yesterday evening.昨天傍晚，他一直散步到火车站。 (5)as well as She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。 一些带有as...as结构的常见短语归纳： as busy as a bee像蜜蜂一样忙碌as easy as ABC像ABC一样容易as deep as a well像井一样深 as light as a feather像羽毛一样轻as soft as butter像黄油一样软as rich as a Jew像犹太人一样富裕 一、“as(否定句中可用so)＋adj．／adv．＋as…”，其基本意思为“……和……一样”。但在实际应用中，此结构在不同的语境中含义差异较大。 1、表示不同人或物同一性质的比较，意为“……和……一样……"。 The tree is as tall as the building(is)．这棵树和那栋楼一样高。 Michael is as bright as George(is)．迈克尔和乔治一样聪明。 2、表示同一个人或物不同性质的比较，意为“既……又……” Alice works as happily as(she)plays(happily)．艾丽丝愉快地工作，尽情地玩。 Danny is not so wise as he is witty．丹尼为人风趣，但欠明智。 3、用于表示两个人或物不同性质的比较，表示程度相同或相当，意为“……而……”。 He was as handsome as his wife was beautiful．他长得非常英俊，他的妻子也长得非常漂亮。 He was as experienced as his brother was green．他经验丰富，而他兄弟却涉世未深。 二、as…as结构的另一种形式是“as much／many＋名词＋as＋从句”。 Mary has written as many essays as her brother．玛丽写的文章篇数和她弟弟一样多。 It is as much your fault as your wife’s．这既是你的过错，也是你妻子的过错。 Henry is as much a hypocrite as·John．亨利跟约翰一样是个伪君子。 三、若有修饰成分，如twice，three times，half，a quaer等，必须置于第一个as之前。 You are not half as clever as you think you are．你可不像自己想象的那么聪明。 She isn’t going out with a man who is twice as old as she． 她不打算和一个比她大一倍的人出去散步。 You’ve made just as many mistakes as I have．我和你犯的错误一样多。
S h o u l d与O u g h t t o 的讲解和练习
Should与Ought to I. 复习 1. Some people can live without meat. 2. May I use the phone please, Mr. White? 3. Could you tell me something about the book? 4. You must not smoke here. 5. What flavor would you like, chocolate or strawberry? 6. We should put rubbish in the bin. 7. She shouldn’t discuss it. 8. Should we discuss it now? / Ought we to discuss it now? -- Yes, we should/ ought to. -- No, we shouldn’t/ ought not to. 9. The students ought not to sleep in the class. 10. Tom ought to hand in his homework on time. II. 二者区别： 时态 Should Ought to 肯定句sb. should do sth. sb. ought to do sth. 否定句sb. should not do sth. sb. ought not to do sth. 一般疑问句Should sb. do sth.? Ought sb. to do sth.? 简略回答 Yes, sb. should do sth. No, sb. should not / shouldn’t do sth. Yes, sb. ought to do sth. No, sb. ought not /oughtn’t to do sth.
as 用法归纳和练习题 一、as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as/so．．．as．．．结构中的第一个as是副词，作“和／与．．．(不)一样”解。 Jack is as tall as his father． He doesn't speak English as／so fluently as you． 二、as作介词。 1．作“如，像”解。They got united as one man． 2．作“充当，作为”解。eg：As a writer，he was famous． 三、as作连词，常用来连接主句和状语从句。 1．引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。eg： He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。 I was startled as he opened the door．他一开门，我吓了一跳。 as作连词，相当于when。eg； As a little boy (When he was a little boy)he began to learn to play piano． 2．引导原因状语从句，作“因为，由于”解，与because的用法相近。eg； I must stop writing now，as I have rather a lot of work to do． 3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。例eg： As in your country，we grow wheat in the north and rice in the south．正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句) When at Rome，do as Romans do．入乡随俗。(方式状语从句) Leave it as it is. 保持原状，不要动它。 4．引导让步状语从句，作“虽然，尽管”解。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。eg； Strange as it may seem，it is true． 尽管这事看上去很奇怪，但却是真的。 Try as he might，Tom could not get out of the difficulties． 不管怎样努力，汤姆还是摆脱不了困境。 Child as he is, he know s a lot. Much as I like you, I will not marry you. 我虽然很喜欢你，可是不愿与你结婚。 四、as作关系代词。 1．引导限制性定语从句，用在“such．．．as”,“the same．．．as”，“as．．．as” “so… as”等结构中，常译作“像．．．一样的人(或物)”，“凡是．．．的人(或物)”。例eg： He wished to be such a man as Lei Feng was．他曾希望做一个像雷锋那样的人。 My hometown is no longer the same as it was．我的家乡再也不像过去一样了。2．引导非限制性定语从句，用来指代它前面的整个句子(即先行句)。这个分句可以位于句首、句中或句末。 As is well known，oceans cover more than 70％of the earth．
s h o u l d用法归纳与练 习 Company Document number：WTUT-WT88Y-W8BBGB-BWYTT-19998
should用法归纳 一、Should 表示过去将来时，即从过去观点看将来要发生的事，多用于间接引语中。 We thought that we should never see you again. 我们想我们再也看不到你了。 The BBC weather report this morning said that we should have rain. 今天早上，BBC电台天气报告说，今天有雨。 二、Should 表示义务、责任、常译为“应当”，“应该”，或表示一种估计的情况，译成“按理应当”，“估计......”。 Why should I pay him 为什么我该付给他钱 They should be there by now， I think. 我估计，他们现在到那儿了。 Should 用于完成时态，表示对过去发生的动作的一种推测，译成“应该已经......”。 You should have washed the wood. (But you haven‘t.) 你应该把伤口清洗了。(然而你没有) 三、在某些从句中，should 表示惊异、意外等情绪，常译为“竟然”。 It seems unfair that this should happen to me.真不公平，这件事竟然发生在我身上。 四、当陈述部分含有ought to ，其反意疑问句部分，美国英语中用should . She ought to stay here， shouldn't her她该留在这儿，是吗 五、用于成语中I should like to......“我想(做)......” I should like to ask the teacher a question. 我想问老师一个问题。 六、"should (not) +have+过去分词(done)" 对已发生的事表示遗憾或责备，表达"本该或不该"之意。如：①He also learns that he should have cared more about his friends.他还明白了他本应该多关心朋友。 ②He shouldn't have let out the secret.他本不该泄露秘密的。(实际情况是"他已泄密"。) 翻译：①If he were here, 如果他(现在)在这里的话，我就会告诉他真相。(事实是，他现在不在这里。)