be able to(do)、can的用法：can是情态动词，有许多含义，表示“...，be able to,could,单词记忆法、语法用法，与be able to,could, 相关例句、名人名言

be able to单词相关例句：

Perhaps you can't control your job, but you may be able to make other changes in your life.——Alan Loy Mcginnis ,British writer或许你不能支配自己的工作，但你能够使生活发生转变。英国作家    麦金尼斯  A L
Dancing in all its forms cannot be excluded from the curriculum of  all noble education: dancing with the feet, with ideas, with works, and ,need I add that one must also be able to dance with the pen?Friedrich W.Nietzsche, German philosopher——所有高尚教育的课程表里都不能没有各种形式的跳舞：用脚跳舞，用思想跳舞，用言语跳舞，不用说，还需用笔跳舞。德国哲学家  尼采 F  

Will she be able to take good care of her donkey, Patrick so that her parents will buy her a pony?

她是否能照顾好这只名为派翠克的小驴子，让她爸妈知道她是有能力养一只小马的呢？

If your base has a conventional airfield, it won't be able to accept heavy bombers.

如果你的基地有一个传统的飞机场，它将不能够接受剧烈的轰炸机。

I may be able to survive the poor at home?

可家里穷我能活下来吗？

You can't follow in another person's footsteps, and no one else will be able to follow in yours.

你不能跟随别人的脚步，别人也同样无法跟随你的脚步。

We are disappointed that you will not be able to come.

你不能来，我们很失望。

I am afraid I won't be able to visit you on Saturday.

恐怕我无法在星期六来拜访您了。

An actor must be able to memorize his lines.

演员须善於熟记台词.

After studying differential calculus you will be able to solve these mathematical problems.

学了微积分之后,你们就能够解这些数学题了。

could单词相关例句：

HAPPINESS——A lifetime of happiness ! No man alive could bear it ; it would be hell on earth .(G. Bernard Shaw ,British dramatist )终身幸福！这是任何活着的人都无法忍受的，那将是人间地狱。(英国剧作家 肖伯纳. G.)
To suppose, as we all suppose, that we could be rich and not behave as the rich behave, is like supposing that we could drink all day and keep absolute sober.——Logan Pearsall Smith, American weiter  如果以为我们变富后不会像有钱人那样行事，这无异地以为我们能终日豪饮，但又能保持头脑清醒。美国作家史密斯.L.P.  
I intend no modification of my hope ...expressed personal wish that all men everywhere could be free.——Abraham Lincoln. American president  我无意改变时常表达的个人愿望： 愿天下所有的人都能自由。美国总统林肯. A  
The crash of the whole solar and stellar systems could only kill you once.( T. Carlyle )——    即使整个太阳系和星系崩溃，你也只死一次。（卡莱尔）

I didn't know that cats could sing.
我不知道猫儿还能唱歌。


I unfolded the map so I could see where I was.
我打开地图看自己在哪里。


I could hear the music from the loudspeakers.
我能从扬声器听到音乐。


Through the window I could see my beautiful garden.
透过这扇窗户我能看见我那美丽的花园。


I don't think I could climb that mountain.
我觉得我是攀不上这座山的。


I could hear the couple's quarrel from the other room.
我能听到从别的屋子传来的那对情侣的争吵声。