辨析be able to 和can的区别
can还可表示“可以”“可能”,即具有某种感情色彩,can只有现在时和过去时两种形式,而be able to则有多种时态形式,在be able to之前可加用另外一个助动词,且多用于否定或疑问结构,而can则无此用法。
一、can词汇分析
音标:英 [kæn] 美 [kæn]
释义:
vt. 将…装入密封罐中保存
aux. 能; 能够; 可以; 可能
n. 罐头; (用金属或塑料制作的)容器; (马口铁或其他金属制作的)食品罐头
短语
can be 可能;可以是
we can 我们可以
can do 能做到;做得到
how can 怎么能够;哪能;怎会
can only 只得
拓展双语例句
1、You can depend of him to be there.
你可以相信他一定会在那儿。
2、What can I do for you?
我能帮你什么忙吗?
3、Do it how you can.
你尽可能试着做做看。
4、Can you cite another case like this one?
你能举出另一个像这样的例子吗?
5、We can overcome any difficulty.
我们能战胜任何困难。
二、be able to词汇分析
音标:英[bi: ˈeibl tu:] 美[bi ˈebəl tu]
释义:能够; 能,会; 克
短语
be e able to 能够 ; 能
be better able to 能更好的
be only able to do 只能够做
Should be able to 应该可以 ; 应该能够 ; 应该是可以的
be able to spare 经受得起
拓展双语例句
1、Do what you can now or you might not be able to do them all.
去做你现在能做的,否则你可能永远也不会开始了。
2、Because all Americans should be able to have loved ones there for them in their time of need.
因为所有的美国人都应当能够在需要时有他们所爱的人在一旁相守。
3、It’s there all the time –we have to be able to see it.
事实上,机会一直就在我们身边,我们必须有发现它的能力。
4、So, we have to be able to detect them.
我们已经能够去检测他们了。
5、They should be able to read and understand everything on the printout.
他们应该能够阅读和理解打印输出上的所有内容。
be able to 和can的区别:
1、当它们表示能力的时候,是一样的。
2、 can只有两种时态,即can 和could, 而be able to 有多种时态,如was/were able to, will/shall be able to, have/has been able to等。
3、表示过去通过努力终于做成了某事要用be able to,而不能用can。
4、can能表猜测,be able to不能。can的这种用法主要用于疑问句和否定句。
5、can 可以表 “允许”, 与may可以互换, 此时不能用be able to 代替。
拓展资料
be able to
1、We may be able to design a course to suit your particular needs
我们或许可以专门设计一门课程以满足你的特殊需求。
2、He may be able to leave hospital early next week.
他下周初也许就可以出院了。
3、Scientists would soon be able to manipulate human genes to control the ageing process.
科学家们很快将能通过操控人类基因来控制衰老过程。
4、They'll be able to furnish you with the rest of the details.
他们将可向你提供其余的细节。
5、One will never be able to understand why these political issues can acquire such force
人们永远也不会明白为什么这些政治问题会有如此大的影响力。
6、They should be able to find you the best package to suit your needs.
他们应该能提供满足你需要的最佳套餐。
can
1、You can imagine he was terribly upset
你能想象得出来,他当时心里乱得要命。
2、How can you complain about higher taxes?
你怎么能抱怨税费的提高呢?
3、Several young men were kicking a tin can along the middle of the road.
几个青年人踢着一个锡罐在路中间走着。
4、With another day's work in the can, Philip is happy to leave the open countryside and head for his London flat.
又干完了一天的活,菲利普满心愉悦地离开了广袤的乡村,前往自己位于伦敦的公寓。
5、Luckily, iron can be reworked and mistakes don't have to be thrown away
所幸的是,铁可以再加工,次品、废品不必被扔掉。
6、A central reservation number operated by the resort can direct you to accommodations that best suit your needs
该旅游胜地开设的预约中心电话可指引你找到最适合你的住处。
7、A selected list of some of those stocking a comprehensive range can be found in Chapter 8.
第8章选列了一些备货品种齐全的商家
当它们表示能力的时候,是一样的。
其区别如下:
1. can只有两种时态, 即can 和could, 而be able to 有多种时态, 如was/were able to, will/shall be able to, have/has been able to等。
2.表示过去通过努力终于做成了某事要用be able to,而不能用can。
3.can能表猜测,be able to不能。can的这种用法主要用于疑问句和否定句。
4.can 可以表 “允许”, 与may可以互换, 此时不能用be able to 代替。
5. can 是情态动词,只能用作谓语成分,be able to是普通动词短语,既可以作谓语,也可以作非谓语
6. be able to 后边接动词不定式表示一种实际情况时,其否定形式不是be not able to,而是cannot。
7. 一般说来, be able to 后边的动词不定式没有被动语态。
can
1、Pork is also the most versatile of meats. It can be roasted whole or in pieces.
在肉类中,猪肉的做法也是最多的,可以整块烤来吃,也可以切片烤来吃。
2、Don't worry yourself about me, I can take care of myself.
你别担心我,我能照顾好自己。
3、People who can't afford to go to the theatre or concerts can afford to go to football matches.
看不起电影或听不起音乐会的人可以去观看足球赛。
4、A vacant lot or a bombsite can, to the amateur naturalist, produce an extraordinary variety of flora and fauna.
对于业余博物学者来说,在一片空地上或被炸后的废墟里可能发现种类繁多的植物群和动物群。
5、From her knowledge of Douglas's habits, she feels sure that the attacker can't have been Douglas.
根据她对道格拉斯习性的了解,她敢断定他不可能是那个袭击者。
be able to
1、They may be able to help with childcare so that you can have a break.
他们可以帮忙照料孩子,这样你就可以歇一歇了。
2、If only I could get some sleep, I would be able to cope.
要是能睡上一会儿,我就能应付了。
3、If you need help at work, your Personnel Manager should be able to help.
如果你工作中需要帮助,人事经理应该能帮上忙。
4、It must be better to be able to offer them love and security.
要是能给予他们关爱和安全感肯定会更好。
5、Without them you will not be able to fulfil the tasks you have before you.
没有他们你将无法完成面临的任务。
推荐于2017-09-05 · 知道合伙人教育行家
1. be able to强调一个人有能力去做,就是有本事的意思
2. can,could表示能够,是情态动词,很多时候是一种推测的语气。
比如,你能帮我吗?
如果用can/could来问,,那这事就是举手之劳,谁都能帮,就是推测对方乐意帮忙不乐意,
如果用be able to来提问,那是很难做到的事,问对方有这个本事没有。
could是can的过去式,但是,现在时中也可以使用could,比can的语气更加客气些。
can泛指一般的能力,而且只有两种形式,即:can, could.
be able to 则主要指具体做到了某件事的能力,其形式主要是靠be 发生变化,所以形式比can 多.
可以说:I can swim. I am able to swim.
但是不能说:All the people could escape from the big fire in time. 只能说:All the people were able to escape from the fire in time.