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could
01
可以
used as the past tense of ‘can’
02
可以
used to ask if one can do something
03
可以
used to show the possibility of something happening or being the case
04
可以
used to present an offer or recommendation
例子
Before the accident, he could lift heavy weights easily.
He could solve complex math problems effortlessly in his youth.
Yesterday, I could see the stars clearly in the night sky.
When I was a child, I could climb trees without any fear.
When I was younger, I could run faster.
