1)-ize,ise,表示"做成,变成,……化“modernize,mechanize,democratize,organize
2)-en,表示"使成为,引起,使有” quicken,weaken,soften,harden
3)-ify,表示"使……化,使成”beautify,purify,intensify,signify,simplify
4)-ish,表示"使,令” finish,abolish,diminish,establish
5)-ate,表示“成为……,处理,作用” separate,operate,indicate
参考:
http://baike.baidu.com/link?url=pxNS1O0YG8LN5T8BOuLgUF_YTH31MWe6z3ZiUTvkB-QND4Aj-twiUPyPO4r27CMn