be able to 用法

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can和be able to用法上的区别~

区别一:强调重点不同
1、be able to 强调通过努力而获得的能力。
2、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。
区别二:强调内容不同
1、be able to强调一种结果,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。

2、can只强调一种可能,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。
区别三:时态限制不同
1、be able to 可以有各种时态。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。
2、can只有一般现在和一般过去两种时态。如:He is / was / will be able to help you。他能帮你的忙

(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 will be able to help you. 他能帮你的忙

be able to

英文发音:[bi ˈeɪbl tu]

中文释义:(因具有品质或技能)能做到…的;(因有足够的自由、权力、时间、财力等而)可以…的,能够…的

例句:

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。

词汇解析:

able

英文发音:[ˈeɪbl]

中文释义:adj.能;能够;有才智的;有才能的;(某方面)擅长的

例句:

They are bright, intelligent, able and confident.

他们聪明又智慧,能干又自信。

扩展资料

be able to的近义词:

1、be capable of

英文发音:[bi ˈkeɪpəbl ɒv]

中文释义:能够承担

例句:

A running track should be capable of absorbing the impact of a runner's foot landing on it.

跑道应该能够吸收奔跑者踩踏地面时产生的撞击力。

2、can

英文发音:[kæn , kən]

中文释义:modal(表示有能力做或能够发生)能,会;(表示知道如何做)懂得;与动词feel、hear、see、smell、taste 连用

例句:

The stadium can be emptied in four minutes.

这个体育场能在四分钟以内让观众全部散场。



be able to与can用法区别:

(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。

(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。

can的用法和意义:

(1) 表示能力,意思为“能,会”。如:
I can sing this song in English. 我能用英语唱这首歌。
Can you tell me where the museum is? 你能告诉我博物馆在哪吗?

(2) 表示许可,意思是“可以”。如:
You can use my pen instead 你可以用我的笔。
Can I come in? 我可以进来吗?

(3) 表示推测,意为“可能,会”,主要用于否定句和疑问句中。如:
Can he be there too? 他也会在那儿吗?
He can’t have finished his work. 它不可能把工作做完了。

【说明】有时也用于肯定句中表示“有时”,或表示理论上的可能性。如:
She can be very unpleasant. 她有时很令人讨厌。
Even experienced teachers can make mistakes. 即使是有经验的教师也可能出错。

(4) 表示惊讶,通常用于疑问句、否定句和惊叹句中。如:
Can this be your reason? 这难道就是你的理由?
How can you say it like that? 你怎么能那样说话呢?

注意:从理论上说,could是can的过去式,但在某些场合中,could可用来代替can,表示现在的情况,只是语气较can委婉,此时,若用could来提问题,回答时,应该用can,而不用 could。如:
Could you answer me a question? 请回答我一个问题好吗?
Yes, I can. / No, I can’t. 好。/ 不行。

希望对你有帮助 如有疑问 请在线交谈 祝你考上理想的学校 O(∩_∩)O

(1) be able to 强调努力而的能力,而can则强调自身已的能力。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 强调结果,而can只强调。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 可以有时态;而can现在和两种时态。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(from www.hxen.com)。

(4) can可用于表示性,推测,允许等情况,而be able to通常不

1)can could 表示能力;可能 (过去时用could),
只用于现在式和过去式(could)。be able to可以用于各种时态。
They will be able to tell you the news soon. 他很快就能告诉你消息了。

2)只用be able to
a. 位于助动词后。
b. 情态动词后。
c. 表示过去某时刻动作时。
d. 用于句首表示条件。
e. 表示成功地做了某事时,只能用was/were able to, 不能用could。
He was able to flee Europe before the war broke out.
= He managed to flee Europe before the war broke out.

注意:could不表示时态

1)提出委婉的请求,(注意在回答中不可用could)。
--- Could I have the television on?
--- Yes, you can. / No, you can't.

2)在否定,疑问句中表示推测或怀疑。
He couldn't be a bad man.
他不大可能是坏人。

be able to 是表示“能”的意思是要经过一番努力而得的,这是与can 的区别之一。
嘻嘻,不知道这样可以不?


江城哈尼族彝族自治县19762805958: be able to 的几种用法, -
战药咳清:[答案] 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...

江城哈尼族彝族自治县19762805958: be able to 的用法 -
战药咳清: be able to与can用法区别:(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...

江城哈尼族彝族自治县19762805958: be able to的语法 -
战药咳清:[答案] be able to后面加动词原型,与can不同的是,can是指先天的“会”,而be able to指的是通过后天努力才“会”

江城哈尼族彝族自治县19762805958: be able to 的语法 -
战药咳清: 用be able to a. 位于助动词后. b. 情态动词后. c. 表示过去某时刻动作时. d. 用于句首表示条件. e. 表示成功地做了某事时,只能用was/were able to, 不能用could. He was able to flee Europe before the war broke out. = He managed to flee Europe before the war broke out.

江城哈尼族彝族自治县19762805958: be able to的用法 -
战药咳清: can 和be able to 都可以表示能力.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.

江城哈尼族彝族自治县19762805958: be able to 的用法.
战药咳清: 表示经过一定的努力并且成功做成某事 不同于can:可以做成某事,但不一定做成功

江城哈尼族彝族自治县19762805958: be able to的使用方法 -
战药咳清: 都行 be able to是一个整体 不是情态动词 相当于can 系动词+able to 是词组 就像睡 和 睡觉 一样

江城哈尼族彝族自治县19762805958: be able to do sth 意思 用法! -
战药咳清:[答案] be able to do sth 有能力做某事,可以用于各种时态,往往表示一次性的能力,或是在特定的情境中能够做某事.出题时,经常和can do sth放在一起进行区分.can do sth表示一般能力,可以用于一般过去时态.如:When the fire ...

江城哈尼族彝族自治县19762805958: be able to的用法 -
战药咳清:[答案] able [形容词,不是动词!] =能; 能够;有才干 (1) He was able to open the door; (2) He will come if he is able.能够的 (3) The brakes were able to be fixed. (4) Maria is a very able nurse.有才干的 (5) They are bright,intelligent,able and confident...

江城哈尼族彝族自治县19762805958: be able to 句型如果接两个动词 应该怎么用想表达有能力做两件事 是be able to do sth.and to do sth.还是be able to do sth and do sth. -
战药咳清:[答案] be able to do sth. and to do sth fg. i am able to teach english and to teach french

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