1-flotation cost:用could造句

He can ride a bike now, but he couldn't a few weeks ago.
他现在能骑自行车了，但几星期前他不会。
· A poor boy like me couldn't go to school.
象我这样的穷孩子上不了学。
· When my father was young he could run fast.
我父亲年轻时能跑得很快。
He said he couldn't arrive before 6 o'clock.
他说他不能在六点钟前到达。
It could rain tomorrow
If I were a bird, I could fly in the sky.
假若我是一只鸟，我就能在天空中飞翔。
They could have completed this work.
他们本来是能够完成这项工作的。
· Nothing could have saved him even if he had been tended without delay.
即使当时他得到了及时的救护，他的生命也无法挽救。
· If he had been with you, you could have been successful.
假如他以前和你在一起的话，你早就能成功了。
· You could have caught the train if you had taken a taxi.
如果你租一辆出租汽车的话，你本来是可以赶上火车的

Before you could blink, he'd grabbed the purse and was halfway down the street.
Her part in the film wasn't very demanding - she could have played it with one hand tied behind her back.
I've done the same recipe so many times I could do it in my sleep now.
I've done this job for so long I could do it standing on my head.
if you could do something standing on your head, you can do it very easily, usually because you have done it many times beforeif someone could do something in their sleep, they can do it very easily, usually because they have done it so oftenMost of our guests were very quiet, but Harry could talk under water, so he kept the conversation going.
if someone could do something with their eyes shut, they can do it very easily, usually because they have done it so many times before. I've driven along this route so often, I could do it with my eyes shut.
I've had nothing but a sandwich all day - I could eat a horse'No, I wasn't angry, I was just a little surprised.' 'Really? You could've fooled me.'
Margaret's ex-husband turned up at the wedding. Honestly, you could have heard a pin drop I only entered for a joke and I won first prize. You could have knocked me down with a feather.
something that you say to describe a situation in which everyone is feeling very angry or nervous and you feel that something unpleasant could soon happen. There was a lot of tension between Diane and Carol; you could cut the atmosphere in that room with a knife.
I'll never forget the expression on her face when she saw me with Pete. If looks could kill...
You look as if you could do with a haircut
The new sound-proof lab is so well designed, you can hear a pin drop. You could have heard a pin drop for a full minute after every song and then the audience would clap wildly.