总体来说没有规则可寻,可能以t或者te结尾的动词多一些,但不能作为规则,熟能生巧吧
在动词词尾加上-(t)ion/(s)ion变成名词
discuss—discussion; express—expression
educate—education; graduate—graduation; operate—operation (去e再加"ion")
decide—decision conclude—conclusion (把de改为s再加"ion")
describe—description描写,描绘 (这是特例,不规则变化)