could什么意思、怎么读？单词用法、记忆法、发音音标、反义词同义词辨析、释义

It was a self-service lunch, so we could take as much food as we wanted.
这是自助午餐，我们可以想吃多少就吃多少。


I didn't know what the phone call was about but I could see the sadness on her face.
我不知道这通电话说了些什么，但我能看出她脸上悲伤的神情。


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。

She was a nice girl. She could sing and dance.

她是个好女孩。她又会唱歌又会跳舞。

※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）