302. It's impossible for sb. to... 对某人来说,……是不可能的
It's impossible for me to eat up so much fruit.
对我来说吃光这么多水果是不可能的。
It's impossible for birds to fly without wings.
鸟没有翅膀是不可能飞的。
It's impossible for Jack to work out this math problem.
让杰克解出这道数学题是不可能的。