英语中Should的用法
英语中Should的用法
should modal verb (negative should not, short form shouldn't )
1
used to show what is right, appropriate, etc., esp. when criticizing *** 's actions
（常用于纠正别人）应该，应当 ：
You shouldn't drink and drive. 你不该酒后驾车。
He should have been more careful. 他应当更小心点儿才是。
2
used for giving or asking for advice （提出或征询建议）该，可以 ：
You should s worrying about it. 你该不要再为此事担忧了。
Should I call him and apologize? 我是不是应该打电话向他道歉？
I should wait a little longer, if I were you. 假如我是你的话，我会再等一会儿。
'She doesn't think she'll get a job.' 'She should worry, with all her qualifications
(= she does not need to worry).'
"她担心找不到工作。" "她那么好的条件，可真该担心的。"
3
used to say that
you expect sth is true or will happen （表示预期）应该会，可能
： We should arrive before dark. 我们天黑以前应该能赶到。
I should have finished the book by Friday. 到星期五我应该能读完那本书。
The roads should be less crowded today. 今天路上该不那么拥挤了吧。
4
used to say that sth that was expected has not happened （表示与预期相反）
本应，本当 .
It should be snowing now, aording to the weather forecast.
按天气预报，现在该下雪才是。
The bus should have arrived ten minutes ago. 公共汽车十分钟以前就该到了。
5
(BrE, formal) used after I or we instead of would
for describing what you would do if sth else happened first （与 I 或 we 连用代替 would，表示虚拟结果）就将.
If I were asked to work on Sundays, I should resign.
要是叫我星期天加班，我就辞职不干了。
6
(formal) used to refer to
a possible event or situation （表示可能）假如，万一
If you should change your mind, do let me know.
假如你改变主意的话，一定要告诉我。
In case you should need any help, here's my number.
万一你需要帮助的话，这是我的电话号码。
Should anyone call (= if anyone calls), please tell them I'm busy.
如果有人打电话来，请告诉他我正忙着。
7
used as the past form of shall when reporting what *** has said
（在间接引语中用作 shall 的过去时） .
He asked me what time he should e. (= His words were: 'What time shall I e?') 他问我他应该什么时候来。
(BrE, formal)
I said (that) I should be glad to help. 我说我乐意帮忙。
8
(BrE)
used after that when sth is suggested or arranged （用于 that 引导的、表示建议或安排的从句中） .
She remended that I should take some time off. 她建议我应该休息一段时间。
In order that training should be effective it must be planned systematically.
为使培训有成效，必须有系统的计划。
In both NAmE and BrE this idea can be expressed without 'should': She remended that I take some time off.
In order that training be effective... 在北美英语和英国英语中，表达这一意思均可省掉 should：She remended that I take some time off.
In order that training be effective ...
9
used after that after many adjectives that describe feelings （用于许多表示感情的形容词后的 that 从句中）.
I'm anxious that we should allow plenty of time.
我殷切希望我们能留出充裕的时间。
I find it astonishing that he should be so rude to you.
他竟然对你这样无礼，真叫我吃惊。
10
(BrE, formal) used with I and
we in polite requests （与 I 和 we 连用，表示客气地请求） .
I should like to call my lawyer. 我希望给我的律师打个电话。
We should be grateful for your help. 对您的帮助我会非常感激。
11
used with I and we to give opinions that you are not certain about
（与 I 和 we 连用，表示没有把握） .
I should imagine it will take about three hours. 我想得用差不多三个小时吧。
'Is this enough food for everyone?' ' I should think so.'
"这些食物够所有人吃吗？" "我觉得够了吧。"
'Will it matter?' ' I shouldn't think
so.' "这有关系吗？" "不会吧。"
12
used for expressing strong agreement （表示十分赞同） .
'I know it's expensive but it will last for years.' ' I should hope so too! '
"我知道价钱贵，但能用好多年。" "我也是这么想的！"
'Nobody will oppose it.' ' I should think not! ' "谁也不会反对的。" "我想也是！"
13
why, how, who, what ~ *** / sth do used to refuse sth or to show
that you are annoyed at a request; used to express surprise about an event or a
situation （表示拒绝、恼怒或惊奇） .
Why should I help him? He's never done anything for me.
*** 吗要帮他呢？他从来没为我做过什么。
How should I know where you've left your bag?
我怎么知道你把包丢在哪儿了？
I got on the bus and who should be sitting in front of me but Tony!
我上了公共汽车，没想到坐在我前面的竟然是托尼！
14
used to tell *** that sth would amuse or surprise them if they saw or experienced it
（表示假如对方看见或经历某事物，一定会感兴趣或吃惊）真该，真应当 ： You should have seen her face when she found out!
你真该看看她发现事情真相时脸上的表情！
英语中should must的用法
should 和must都是情态动词，表达说话人的一种语气和态度，should表示委婉的建议和请求等，而must则表示一定，必须。这句的语境分析一下，很显然，是家长和孩子之间的对话，所以用must,因为父母对子女，就是表要求的，不是请求和建议了，那是用在朋友之间的。
should的用法！急！初中英语
should是情态动词，后面直接跟动词原形，当然没有should to的用法。
英语中could的用法是，could的用法有哪些
1. 表示能力,could 是 can 的过去.如：
Can you speak English? 你会说英语吗?
Could you speak English then? 那时候你会说英语吗?
2. 表示许可,注意以下用法：
(1) 对于现在或将来的“许可”,要区分以下两种情况：
a. 表示请求允许(即请求别人允许自己做某事),可用 can(=may)或 could(=might)(注意：这里的 could 并不表示过去,而是表示现在,只是语气较委婉).如：
Can [May, Could, Might] I e in? 我可以进来吗?
b. 表示给予允许(即自己允许别人做某事),一般只用 can(=may),
而不能用 could 或 might.如：
A: Could [Can] I use your pen? 我可以借用你的钢笔吗?
B: Yes, of course you can.当然可以.(注意: 此处不用 Yes,
you could)
(2) 对于过去的“许可”,也要区分以下两种情况：
a. 表示过去一般性允许(即表示某人随时都可以做某事),用 can的过去式(即 could).如：
When I lived at home, I could watch TV whenever I wanted
to. 我住在家里时,想什么时候看电影就可以什么时候看 (一般性允许).
b. 表示过去特定的允许( 即表示在过去某一特定情况下允许进行某一活动),则不用 could, 而需换成其它表达(如：had permission或 was [were] allowed to).如：
I was allowed to see the film yesterday evening. 昨天晚 上允许我去看了电影(特定的允许,所以不能用 could).
3. 表示推测：
(1) 对现在或将来的推测,can 通常只用于否定句或疑问句中,一般不用于肯定句：
It can’t be true. 那不可能是真的.
What can they be doing? 他们会在干什么呢?
Can it be Jim? 那会是吉姆吗?
但 could(可以表示现在)则可用于肯定句中：
We could [may, might] go to Guilin this summer. 今年夏天我们可能要去桂林.(将来可能性)
You could [may, might] be right, but I don’t think you are. 你可能是对的,但我并不认为你是对的.(现在可能性)
注意：can 有时也用于肯定句中表示推测,这主要见于：
a. 表示理论上的可能性(即从理论上或逻辑上分析是可能的,但实际未必会发生).如：
Anybody who wants to can bee a prison visitor. 只要愿意,任何人都可以到监狱去帮助解决犯人的困难.
Mary is in poor health. She can be ill at any time. 玛丽的身体不好,她随时都可能会生病.
Evem experienced teachers can make mistakes. 即使是有经验的教师也可能出错.
b. 后接“be, get, seem, bee＋形容词”,表示“有时会”、“时常会”等义.如：
It can get very hot here. 这里有时会很热.
She can be very unpleasant. 她有时很令人讨厌.
My grandmother could be very unpleasant at times. 我祖 母有时候会让人非常不愉快.
(2) 对过去的推测,必须在 can, could 之后接动词的完成式：
a. can＋have＋过去分词(主要用于否定句或疑问句,一般不用于肯定句).如：
I saw him just now;he can’t have gone to Japan.我刚刚见过他,他不可能到日本去了.
Why does he know this? Can someone have told him about it? 他怎么知道? 会是哪个人告诉他了吗?
b. could＋have＋过去分词(可用于肯定句、否定句或疑问句),主要用于：
①表示对过去的推测,其意为“可能(已经)……”.如：
He could have gone home. 他可能已回家了.
Where could he have gone? 他会到哪里去了呢?
He couldn’t have seen her there. 他不可能在那儿见到她.
②表示过去没有实现的可能性(即某事本来可以发生,但却没有发生),意为“本来可以……”.如：
He could have told her, but he didn’t choose to. 他本来可以告诉她的,但他没有这样做.
③用来委婉地责备某人过去应该做某事而没有去做,意为“本来应该……”.如：
You could have helped him. 你本来应该来帮助他的.
④表示“差点儿就要”.如：
I could have died laughing. 我差点儿笑死了.
希望可以帮助你,亲!
英语中人口population的用法
population是一个集合名词,它的用法有时较为特殊,所以很容易用错。下面谈一下它的用法。
一、population常与定冠词the连用,作主语用时,谓语动词常用第三人称单数形式。例如:
The world\'s population is increasing faster and faster. 全世界的人口增长得越来越快。
At the beginning of the entieth century, the world\'s population was about 1,700 million. 在二十世纪初,全世界的人口大约是十七亿。
二、当主语是表示\"人口的百分之几、几分之几\"时,谓语动词用复数形式。例如:
About seventy percent of the population in China are farmers. 中国大约有百分之七十的人口是农民。
三、有时population可用作可数名词,其前可用不定冠词。例如:
China has a population of about 1.3 billion. (=There is a population of about 1.3 billion in China.) 中国大约有十三亿人口。
New York is a big city with a population of over 10 million. 纽约是一个有一千多万人口的大城市。
在表示多个地区的人口时,population要用复数形式populations。例如:
Many parts of the world, which once had large populations and produced plenty of crops, have bee deserts. 世界上很多地区一度人口众多,种植大量的农作物;现在,这些地区已经变成了沙漠。
四、表示人口的\"多\"或\"少\",不用\"much\"或\"little\",而要用\"large\"或\" *** all\"。例如:
India has a large population. 印度人口众多。
Singapore has a *** all population. 新加坡人口少。
五、询问某国、某地有多少人口时,不用\"How much...?\",而用\"How large...?\";在问具体人口时用\"What...?\"。例如:
-How large is the population of your hometown? 你们家乡有多少人口?
-The population of our hometown is nearly ice as large as that of yours. 我们家乡的人口是你们家乡人口的将近两倍。
-What is the population of Canada? 加拿大的人口有多少?
-The population of Canada is about 29 million. 加拿大的人口大约有二千九百万。
六、population还表示\"某地、某类的动、植物或物品的总数\"。例如:
In India, however, the population of tigers has increased, from 2,000 in 1972 to about 5,000 in 1989. 然而在印度,老虎的总数已从1972年的2,000只增长到了1989年的大约5,000只。
英语中do的用法,和does的用法
1） 构成一般疑问句，例如：
Do you want to pass the CET? 你想通过大学英语测试吗？
Did you study German? 你们学过德语吗？
2） do + not 构成否定句，例如：
I do not want to be criticized. 我不想挨批评。
He doesn't like to study. 他不想学习。
In the past, many students did not know the importance of English. 过去，好多学生不知道英语的重要性。
3) 构成否定祈使句，例如：
Don't go there. 不要去那里。
Don't be so absent-minded. 不要这么心不在焉。
说明： 构成否定祈使句只用do，不用did和does。
4） 放在动词原形前，加强该动词的语气，例如：
Do e to my birthday party. 一定来参加我的生日宴会。
I did go there. 我确实去那儿了。
I do miss you. 我确实想你。
5） 用于倒装句，例如：
Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English.
只有在开始大学生活时我们才认识到英语的重要性。
说明： 引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。
6） 用作代动词，例如：
---- Do you like Beijing? --你喜欢北京吗？
---- Yes, I do. --是的，喜欢。（do用作代动词，代替like Beijing.）
He knows how to drive a car, doesn't he?
他知道如何开车，对吧？
英语中have和has的用法，a和an的用法
复数用have 单数用has
辅音发音的单数词前用a
元音发音的单数词前用an
英语中as的用法
据我所知 as有两个用法
如果放在句子前面 As the man walk..... 用法就是正当.......
用在句子中间的话He ate the cake as he was hungry 用法意思和因为，because完全一样
