ase 表示“基础”、“地基”、“底部”,也用于构成或支撑物体底部的“基础”.例如：
we camped at the base of the mountain.我们在山下设营.
i found a small insect at the base of the flower.我发现这花的底部有一个小昆虫.
the base of this monument is made of marbles.该纪念碑的地基是用大理石做成的.
basis 表示“基础”、“根据”,它常修饰无形的,抽象的东西.如学说、理论、信仰等.例如：
trust is the basis of lasting friendship.信任是保持友谊的基础.
what basis do you have for this judgment?你是根据什么下这判断的?
this theory rests on a solid scientific basis.这一理论有坚实的科学基础.
on the basis of以…为基础