知识点1:can和could
[1]could单词记忆法◆记忆方法一:联想方式:could-丑陋的这件事情的真相可能是丑陋的。◆记忆方法二:联想方式:could-丑陋的记忆方法:这件事情的真相可能是丑陋的。

(4)委婉客气地提出问题或陈述看法,指的是现在时间。主要用于疑问句,回答时用can。
3、can与could的区别
can表推测时只用于否定句和疑问句(could无此限制)。couldn't的可能性比can't小。
[2]否定句,疑问句,相关知识点there be的否定句与疑问句[1]there单词记忆法◆记忆方法一:联想方式:t-天;here-很热那儿天气很热◆记忆方法二:联想方式:t-天;here-很热记忆方法:那儿天气很热查看详情>>Is there room for me in the car? 车子里还有我坐的地方吗?Are there any letters for me? 有我的信吗?若谓语中包括有助动词或
4、can与be able to的区别
[3]able,区别,相关知识点知识点1:ABLE和CAPABLE的区别standing great pressure。玻璃尽管一击就碎,但却能承受很大的压力。④able后接动词不定式;而 capable接“of+动名词”。例如:[1]不定式,动名词,相关知识点look forward to词组中的to是介词,所以其后要加名词或动名词,不能接不定式。[误] I'm looking fo
(1)现在时:无区别,但后者不常用。
(2)完成时;can没有完成时,此时要用have(has,had)been able to。
(3)将来时:can没有将来时,要用will be able to。
(4)过去时:could表示一般能力,was/were able to 表示在具体场合通过努力成功做成某事的能力。
知识点2:can与could的用法详解

Could you speak English then? 那时候你会说英语吗?
② 若表示过去的特定能力(即在过去特定场合做某事的能力),则不能用could,而用was (were) able to do sth,或用 managed to do sth,或用 succeeded in doing sth 等。
He studied hard and was able to pass the exam. 他学习很努力,所以考试能及格。
At last he succeeded in solving the problem. 他终于把那个问题解决了。
【注】could 不用来表示过去特定能力通常只限于肯定句,否定句或疑问句中,它则可以表示过去特定的能力:
[4]否定句,疑问句,相关知识点知识点1:some用于疑问句和否定句的用法[1]some单词记忆法◆记忆方法一:联想方式:so收;me我她终于肯收我的一些礼物◆记忆方法二:联想方式:so收;me我记忆方法:她终于肯收我的一些礼物查看详情>>Would you like some melon? 你要吃点瓜吗?Shall I pour you some tea? 我给你斟点茶好吗?Why don’t you go
I managed to find the street, but I couldn’t find her house. 我想法找到了那条街,但没找到她的房子。(前句为肯定句用managed to,不用could,后句为否定句,可用could)
另外,could还可与表示感知的动词(如see, hear, smell, taste, feel, understand等)连用表示的特定能力:
Looking down from the plane, we could see lights on the runway. 从飞机上向下看,我们可以看见机场跑道上的点点灯火。
还有在间接引语中,could也可表示过去特定的能力:
He said he could see me next week. 他说他下周能见我。
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知识点3:can和could

③当我们要强调过去确实使用了某种能力时,要用was(were)able to,而不用could。was able to 表示“设法干成某事”,即succeed in doing sth.或manage to do sth.而could只表示“具备某种能力”。
He is such a good swimmer that he was able to save the two boys from drowning the other day.他是一位游泳健将,因此前些日子他救上了两名溺水男孩。
[5]such,that,相关知识点such ... that ...句型结构分析语法讲解:句子成分、什么句型句法,怎么用什么意思[1]such单词记忆法◆记忆方法一:联想方式:such(树杈)这个树长着如此奇怪的树杈。◆记忆方法二:联想方式:such(树杈)记忆方法:这个树长着如此奇怪的树杈。查看详情>> Such a good article did he write that he won the
The fire spread through the hotel very quickly but everyone was able to get out. 虽然大火蔓延很快,使旅馆烧起来,但大家还是逃了出来。
(2)表可能性
I thought the story could not be true我认为这个故事不可能是真的。
Anybody can make mistakes.人都会犯错误。
(3)表许可(常用于口语中)。
Can/Could I go now?我可以走了吗?
He said I could use the computer.他说我可以用计算机。
Father said we could go to the concert.父亲说我们可以去参加音乐会。
-Could I borrow your dictionary? 你把字典借给我可以吗?
-Yes, of course you can. 当然可以。
(4)表惊异怀疑、不相信等态度
①主要用于否定句、疑问句和感叹句中,表惊异怀疑、不相信等态度。
[6]疑问句,感叹句,相关知识点知识点1:疑问句形式的感叹句英语中常可用否定疑问句表示感叹句。如:Isn't the weather nice! 天气多么好呀!Hasn't she grown! 她长这么大了!Isn't it cold! 天气好冷啊!Hasn't she got lovely eyes! 她的眼睛多可爱呀![1]lovely单词记忆法◆记忆方法一:联想方式:love爱 ly:旅游记忆方法:
Where can/could they be now?他们现在能在哪儿呢?
What can he mean?他会是什么意思?
②如果跟完成时,则表示对过去发生的事的怀疑和不肯定。could比can更加不肯定。
Can he have left already?他会是走了吗?
Could she have forgotten my address?她会把我的地址忘了?
It couldn't have been Xiao Wang. He has gone to the factory.那不可能是小王,他去了工厂。
[7]have been,have,相关知识点 have been to / have been in / have gone to[1]been,gone,相关知识点been可以表示come或gone的意思[1]come单词记忆法◆记忆方法一:联想方式:c:月亮;o:呼啦圈;me:我 月亮转着呼啦圈来到我的面前◆记忆方法二:联想方式:c:月亮;o:呼啦圈;me:我 记忆方法:月亮转着呼啦圈来到我的面前查看详情>>been
could相关单词意思与记忆法:
could单词意思解释释义:
aux. 可以, 能
could单词记忆法:
◆记忆方法一:
联想方式:could-丑陋的
这件事情的真相可能是丑陋的。
◆记忆方法二:
联想方式:could-丑陋的
记忆方法:这件事情的真相可能是丑陋的。
can相关单词意思与记忆法:
can单词意思解释释义:
vt. 装罐n. 罐头, 容器aux. 能, 可以【计】 作废字符相关词组: carry the can
can单词记忆法:
◆记忆方法一:
联想方式: can-餐
我会做早餐
◆记忆方法二:
联想方式: can-餐
记忆方法:我会做早餐
could单词相关例句:
HAPPINESS——A lifetime of happiness ! No man alive could bear it ; it would be hell on earth .(G. Bernard Shaw ,British dramatist )终身幸福!这是任何活着的人都无法忍受的,那将是人间地狱。(英国剧作家 肖伯纳. G.)
To suppose, as we all suppose, that we could be rich and not behave as the rich behave, is like supposing that we could drink all day and keep absolute sober.——Logan Pearsall Smith, American weiter 如果以为我们变富后不会像有钱人那样行事,这无异地以为我们能终日豪饮,但又能保持头脑清醒。美国作家史密斯.L.P.
I intend no modification of my hope ...expressed personal wish that all men everywhere could be free.——Abraham Lincoln. American president 我无意改变时常表达的个人愿望: 愿天下所有的人都能自由。美国总统林肯. A
The crash of the whole solar and stellar systems could only kill you once.( T. Carlyle )—— 即使整个太阳系和星系崩溃,你也只死一次。(卡莱尔)
I didn't know that cats could sing.
我不知道猫儿还能唱歌。
I unfolded the map so I could see where I was.
我打开地图看自己在哪里。
I could hear the music from the loudspeakers.
我能从扬声器听到音乐。
Through the window I could see my beautiful garden.
透过这扇窗户我能看见我那美丽的花园。
I don't think I could climb that mountain.
我觉得我是攀不上这座山的。
I could hear the couple's quarrel from the other room.
我能听到从别的屋子传来的那对情侣的争吵声。
can单词相关例句:
Smokers and nonsmokers can not be equally free in the same railway carriage.——Ceorge Bernard shw. British dramatist. 吸烟者和不吸烟者在同一节车厢里无法享受同样的自由。英国剧作家 肖伯纳,.G.
No one can degrade us except ourselves; that if we are worthy, no influence can defeat us.——B.T.Washington, American educator除了我们自己以外,没有人能贬低我们。如果我们坚强,就没有什么不良影响能够打败我们。美国教育家 华盛顿 B T
False with one can be false with two. 对一个人虚伪,也会对两个人虚伪。
One wrong (or false) move can lose the whole game. 棋错一著,全盘皆输。
What weakness is it that you can never tolerate?---Sycophancy and servile flattery. 你最不能容忍的缺点是什么?----奴颜婢膝.
The world can be changed by man's endeavor, and that this endeavor can lead to something new and better .No man can sever the bonds that unite him to his society simply by averting his eyes . He must ever be receptive and sensitive to the new ; and have sufficient courage and skill to novel facts and to deal with them . (Franklin Roosevelt , American President )——人经过努力可以改变世界,这种努力可以使人类达到新的、更美好的境界。没有人仅凭闭目、不看社会现实就能割断自己与社会的联系。他必须敏感,随时准备接受新鲜事物;他必须有勇气与能力去面对新的事实,解决新问题。(美国总统 罗斯福建. F.)
No country , however rich , can afford the waste of its human resources .(Franklin Roosevelt , American president)——任何一个国家,不管它多么富裕,都浪费不起人力资源。(美国总统 罗斯富. F.)
The human species, according to the best theory I can form of it, is composed of two distinct races, the man who borrows, and the man who lends.——Charles Lamb, British essayist 按照我所能归纳的最好理论,人类是由两个截然不同的种族构成的,即借方与出借方。英国散文家兰姆,C.
We can not tell the precise moment when friendship is founded, As in filling a vessel drop by drop, there is at last a drop which makes it run over ; so in a serics of kindness there is at last one which makes the heart run over.——James Boswell, British writer 我们无法讲出友谊缔造的确切时刻,就像一点一滴地倾注一个容器一样,终有一滴使容器满溢;因此,面对接二连三的好意,终有那么一次会动人心弦,情谊洋溢。英国作家 博斯韦尔,J.
Bite off more than one can chew. 贪多咽不下。
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