字母A开头的词缀ab-,abs-ab-,abs-加在词根前,表示“相反,变坏,离去”例如:abnormal反常的;abuse滥用;absent缺席的;abduct诱拐;abstract抽象的;心不在焉的;abstain戒绝;abscond潜逃;abstinence节制;禁欲ab-,ac-,ad-,af-,ag-,an-,ap-,ar-,as-,at-ab-,ac-,ad-,af-,ag-,an-,ap-,ar-,as-,at-等加在同辅音字母的词根前,表示“一再”等加强意例如:accelerate陪伴;accentuate加速;accomplish强制;accumulate积累;additive上瘾的;adduce引证,举例;affable亲切的;afford买得起;affirm肯定;aggrandize扩大;announce通告;appal使震惊;appoint指定,任命;arrange安排;assist帮助;attach附上,依恋able,ible可的,能的例如:readable可读的sensible可觉察的