What is bought is cheaper than a gift.

　　买来的东西总比送来的便宜。

　　

　　A cheerful wife is the joy of life.

　　快乐的妻子是人生的乐事。

　　

　　Bite off more than one can chew.

　　贪多嚼不烂。/不自量力。/力不胜任。

　　陈蓉英