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辨析be able to 和can的区别
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
be able to的时态用法？
be able to 的用法有以下5种：
(1) be able to 强调通过努力而获得的能力,而can则强调自身已具有的能力.如：
She can sing the song in English.她能用英语唱这首歌.
He will be able to sing this song in English in a few minutes,too.几小时之后,他也能用英语唱这首歌.
(2) be able to 强调一种结果,而can只强调一种可能.如：
Luckily,he was able to escape from the big fire in the end.幸运的是,他终于逃出了大火.
If he got here a few hours earlier,I could save him.要是他早几小时来,我还能救他.
(3) be able to 可以有各种时态；而can只有一般现在和一般过去两种时态.如：
I could help you last night,but you didn’t come.昨天晚上我能帮你,而你又没来.
Can you see it there?你能看见它在那儿吗?
He is / was / will be able to help you.他能帮你的忙
Will you be able to camera the lecture tomorrow?你明天能把讲座录下来吗?
I'm sorry I haven't been able to answer your letter in time.真对不起我没能及时给你回信.
be able to的用法
(1) be able to 强调通过努力而获得的能力,而can则强调自身已具有的能力.如：
She can sing the song in English.她能用英语唱这首歌.
He will be able to sing this song in English in a few minutes,too.几小时之后,他也能用英语唱这首歌.
(2) be able to 强调一种结果,而can只强调一种可能.如：
Luckily,he was able to escape from the big fire in the end.幸运的是,他终于逃出了大火.
If he got here a few hours earlier,I could save him.要是他早几小时来,我还能救他.
(3) be able to 可以有各种时态；而can只有一般现在和一般过去两种时态.如：
I could help you last night,but you didn’t come.昨天晚上我能帮你,而你又没来.
Can you see it there?你能看见它在那儿吗?
He is / was / will be able to help you.他能帮你的忙
Will you be able to camera the lecture tomorrow?你明天能把讲座录下来吗?
I'm sorry I haven't been able to answer your letter in time.真对不起我没能及时给你回信.
Ps:指过去某时或某个时刻设法做成某事,不用could,而用was\were able to.
I talked with her for a long time,and eventually I was able to make her believe me.我谈了很久,最终还是使她相信了我的话.
(4) can可用于表示可能性,推测,允许等情况,而be able to通常不这样用.
You are able to use my pen.(误)
You can use my pen.(正)
（5） can有被动语态,主语为人或物皆可,而be able to只接不定式的主动形式,不接表示被动的不定式,也不可用无生命的名词作主语.例如：
The work is able to be done by him.（误）
He is able to do the work.（正）
be able to中文什么意思
be able to 英[bi: ˈeibl tu:] 美[bi ˈebəl tu]
v. 能，会;能够;克
[例句]People will be able to plan responsibly.
人们将能够负责任地进行规划。
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