K-7:kick down the ladder 过河拆桥
A:Why are you still so kind to her?
A:你对她怎么这么好？
B:I shall never forget all the wonderful things she had done for me when I was in need of help.
B：我永远忘不了在我需要帮助的时候她为我做的一切。
A:But that was all passed.
A：但那都过去了。
B:I know, but I wouldn't kick down the ladder and forget all her kindness.
B：我知道，但我不能过河拆桥，忘了她的好。
