beableto和can的区别
发布网友
发布时间：2022-05-12 21:38
共3个回答
热心网友
时间：2023-10-24 04:56
在一般现在时主动语态中表示“能”、“会”时,两者可互换,意义差别不大.如：
I can / am able to reach the apples.
但在以下几种情况中两者不能换用：
1、在词义上,can 除可以表示“能”、“会”外,还可以表示“许可”、“允许”或可能性,而 be able to 则不可.例句：
A :Can it be true?
B :No,it can't be true.
2、当表达将来的能力时,一般要用 will be able to； can 一般只有现在时和过去时两种时态形式.用于完成时等其它时态时,也用 be able to.例句：
1) I'll be able to speak English in another few months.
2) If I have a good sleep,I'll be able to work out the problem.
3) I've not been able to find my bike.
但是当人们现在决定将来是否有做某事的能力时,can 也是可以用的.例句：
I'm too busy today,but I can help you with your English tomorrow.
3、be able to 多表示“人”有能力或技巧做某事,一般不用于指物；而 can 表示人、物的“能”、“会”都可以.例句：
This kind of car can run very fast.It's new.
4、can 可以有被动语态形式,而 be able to 则不能用于被动语态.例句：
The mistake can't be corrected.
5、can 与 be able to 不能重叠使用.例句：
（误）He can be able to do it well.
热心网友
时间：2023-10-24 04:56
beableto和can的区别：
1、表达能力时，可以互换。
例如：他能*语。
He can speak French.
He is able to speak French.
她只两岁就会游泳。
She could swim when she was only two.
2、can只用于现在式和过去式；be able to 可以用于各种时态。
例如：
They will be able to tell you the news soon.
他很快就能告诉你消息了。
l haven't been able to sleep recently.
最近我睡不着觉。
3、can可以表示“许可”“允许”或“可能性”。
"Can l sit here?"
"Yes,please."
"Can it be true?"
"No.it can't be true "
4、表示成功地做了某事时，只能用was/were able to。
He was able to flee Europe before the war broke out.
l was able to swim to the bank after the boat turned over.
5、be able to可以和情态动词，动词不定式等连用。
You might be able to persuade him.
你也许能够说服他。
l hope to be able to do the work.
热心网友
时间：2023-10-24 04:57
be able to 则指后天习得的能力
