形容词后缀分两大类.一类是加到名词上的；另一类是加到动词上的.
一加到名词上的主要有：① -y,如：bloody,dirty,healthy,juicy,muddy； ② -ly,如：costly,friendly,lovely,orderly,timely；③ -ful,如：careful,faithful,helpful,peaceful,useful；④ -less,如：careless,harmless,noiseless,senseless,useless；⑤ -ous/-ious,如：dangerous; courageous,envious,mysterious；⑥ -al/-tal/-ial/-tial,如：accidental,horizontal,colonial,influential；⑦ -ic/-etic/-atic,如：artistic,sympathetic,systematic；⑧ -ish,如：childish,foolish,selfish；⑨ -like,如：life-like,business-like,war-like；⑩ -ed/-en,如：skilled,horned,golden,wooden.
二加到动词上的有：① -ent/-ant,如：dependent,different,observant,pleasant；② -able/-ible,如：agreeable,comfortable,defensible,sensible；③ -ive/-tive/-ative/-itive,如：active,attentive,imaginative,sensitive；④ -ed/-en,如：advanced,noted,stolen,swollen；⑤ -ing,如：annoying,disgusting,entertaining.
-able/ible 出现在第二类后缀中,“-able”后缀的形容词属英语体系的字：“-ible”后缀的形容词则来自拉丁体系.前者数量大,后者数量少,主要的是下面这些,可以特别留意：
accessible,apprehensible,audible,compatible,contemptible,convertible,corrigible,destructible,digestible,divisible,defensible,edible,eligible,exhaustible,fallible,feasible,flexible,forcible,horrible,illegible,intelligible,negligible,perceptible,possible,responsible,resistible,sensible,suspectible,tangible,terrible,visible.
现在顺便把名词、动词和副词主要后缀提出,作为参考：
⑴名词后缀
-ment,-t,-ture,-ion/-ition,-al,-ance,-ent,-er,-ant 等.这些名词后缀都要加到适当的动词上,如：arrangement,restraint,fixture,celebration,extension,competition,renewal,assistance,resident,exporter,attendant.
-ness,-y/-ty/-ity,-th,-ce/-cy 等,可以加到适当的形容词上如：darkness,kindness,honesty,loyalty,simplicity,truth,warmth,importance,absence,ungency,efficiency.
⑵动词后缀：
加到名词上的有 -en,-ise/-ize,-fy,-ate,如：frighten,apologise,beautify,motivate.
加到形容词上的有 -ise/-ize,-en,如：modernise,realise,brighten,weaken.
⑶副词后缀：
-ly,可以加到形容词和某些名词上,如：beautifully,clearly,leisurely,weekly.
每个后缀都有一定的意思,但不能脱离词根独立生存,这点要特别注意,以免犯错
