一般来说,如果以"ce","se"结尾,变名词是改为"cion","sion".
eg.supervision,revision
以其他辅音字母加"e"结尾,变名词时会改为"ation"."te"结尾时直接改为"tion".也有少量是"sion"或"cion".
eg.preparation,frustration,decision
以一般的闭音节结尾,会加上"ment","ture","(en/an)cy"等