Be able to use

Be able to use

Be able to is different from can in usage
(1) Be able to emphasizes the ability obtained through hard work, while can emphasizes the ability already possessed
She can sing the song in English
He will be able to sing this song in English in a few minutes, too
(2) Be able to emphasize one result, while can only emphasize one possibility
Lucky, he was able to escape from the big fire in the end
If he got here a few hours earlier, I could save him
(3) Be able to has all kinds of tenses, while can has only two tenses: the present tense and the past tense
I could help you last night, but you didn't come
Can you see it there?
He is / was / will be able to help you
(4) Can can be used to indicate possibility, conjecture, permission, etc., while be able to is not usually used
The usage and meaning of can are as follows
(1) It means "can, will"
I can sing this song in English
Can you tell me where the museum is?
(2) Permission means "yes"
You can use my pen instead
Can I come in?
(3) It is mainly used in negative and interrogative sentences
Can he be there too?
He can't have finished his work
Sometimes it is used in affirmative sentences to express "sometimes" or to indicate theoretical possibility
She can be very unpleasant
Even experienced teachers can make mistakes
(4) It is usually used in interrogative, negative and exclamatory sentences
Can this be your reason?
How can you say it like that?
Note: theoretically, could is the past tense of can, but in some occasions, could can can be used to replace can to indicate the present situation, but the tone is more euphemistic than can. At this time, if you use can to ask questions, you should use can instead of could
Could you answer me a question?
Yes, I can. / no, I can't
Hope to be helpful to you. If you have any questions, please talk online. I hope you will be admitted to the ideal school_ ∩)O

I don't want the difference and usage between be able to and can, I want the difference and usage of be able to and are / is able to Now people can travel to many places by air

In fact, be able to is a verb, including is, am, are, and be able to is a form, depending on the subject

Be able to be followed by more than one verb? What is the format of "be able to" if it is followed by more than one verb? To be able to read and write to?

The word "to" in front of the second verb is omitted according to the grammatical convention, but it still means to write

Will she ( ) do the work?A.be able to B.able to C.is able to

A

A am able to B will be able to

How do I think the answer is B. If I learn to swim, then I will probably swim in the future

She will be able to dance in a week?

She can dance in a week!

Will she _________ Swim soon A.can B.is able to C.be able to D.able to

Will she _________ swim soon?
Select c
Be able to do something in the future
Use [will be able to] instead of can
Can can only be used in the present tense

The boy is( ) brave.He is able to swim( )the river.A enough ,through B enough,across C quite,though D quite,across

D quite,across The boy is( quite ) brave.He is able to swim( across )the river.

how brave he was!he was able to swim across the river in such a bad weather A.could B.was able to C.might D.should Why not choose a? Can't you also have the ability?

Semantically, can / could belongs to the modal auxiliary verb, which means that the subject has a certain "potential ability", but does not include the implementation of the ability; and be able to belongs to the semi auxiliary verb, which not only means that the subject has a certain "ability", but also often implies the implementation of the ability, It is a foregone conclusion whether the subject "potential" will be implemented or not
1）We could save his life.
We have a way to save him
2）We were able to save his life.
We were able to save him
Sentence 1) only means that the subject has the ability to save people, but it may not be implemented; sentence 2) means that the subject has not only the ability to save people, but also has been successfully implemented

( )The little boy___ swim across the river when he was ten.A.can B.would C.was able to D.will ( )The little boy___ swim across the river when he was ten. A.can B.would C.was able to D.will The correct answer is C, but why is C? Also, please tell us why we can't choose a?

The answer is right. Because the main meaning of the question here is that the little boy can swim across the river when he is ten years old
Here is a kind of affirmation, can swim past, so use will and would not be appropriate, they both indicate the future
In this case, the past tense should be used, so a can't be selected. In C, was able to is equivalent to could