名词变动词:en- encourage
名词变形容词:
-y windy,rainy,sandy
-ful careful,peaceful
-some handsome,troublesome
-ous dangerous,humorous
动词变名词:
-(a)tion creation,education
-ment development,movement
-er employer,worker
-or visitor,sailor
-ness carelessness
谁能帮我总结：名词变动词常用词缀名词变形容词常用词缀动词变名词常用词缀每种只需要最常用的几个,速要～‘