bend over backward
:Do you know Mark? 你认识马克吗？
:Yeah! He is a nice guy. He is very helpful and always bends over backward to help those who are in need of help.认识，他是好样儿的，他总是乐于帮助那些需要帮劝的人。
:Can you introduce him to me?你能介绍我认识他吗？
:Sure.当然可以。
bend over backward 竭尽全力去做
:Do you know Mark? 你认识马克吗？:Yeah! He is a nice guy. He is very helpful and always bends over backward to help those who are in need of help.认识，他是好样儿的，他总是乐于帮助那些需要帮劝的人。:Can you introduce him to me?你能介绍我认识他吗？:Sure.当然可以。bend over backward 竭尽全力去做
