看到一个单词时,怎样才能知道是形容词还是副词还是名词答:表示动作的前缀:encourage使有勇气 2,名词性后缀 有-ance,-ness,-eer,-ist ,-tion等等:importance,happiness,career 3,动词性后缀 有-ate,-en,-fy,-ize:enlarge,modify 4,形容词后缀:有-ic,-ical,-al,-ial,-ual,-ive,-ent,-ple,-fold,-some,-less,-ful,-form,-able,-ible,-most,-...