一:动词后加or或er变成对应的人,如conduct—conductor ,cook—cooker,drive—driver , edit—editor;
二:动词后加ment,如achieve—achievement, adjust—adjustment , advertise—advisement ,agree—agreement;
三:动词后加tion,如adapt—adaptation,affect—affection,attract—attraction;
四:动词后加sion,如admit –-admission,conclude—conclusion,decide—decision;
五:动词后加-ance/-ence,如allow—allowance,aear—aearance,assist—assistance;
六:动词后加-al,如arrive—arrival,survive—survival;