... board” refers to the side of a boat. In the storm, if the rail is broken, the captain will have two choices. 7 One is to fix it, and the other is to let it go by the board and fall into the water. ... basing on natural phenomena to create and sum up into many idioms which was short, stable but had a full meaning to help the children could remember, think and do them. Up to now, idioms have kept ... grammatically or can not be understood from the individual meaning of its elements. (Website: www.answer.com/topic/idiom). For instance, to fall out mean to quarrel, but neither fall nor out...