1.affiliation n.联系，联合（link or connection made by affiliating）
词根记忆：来自affiliate(v.使附属；使发生关系)
例:The information that Wulf herself provided on religious afflliation and gender of students is in fact accurate.
2.affirmative a.肯定的( asserting that the fact is so);n.肯定语(a word or statement of agreement)
词根记忆：来自affirm(v.断言，肯定)
例:Affirmative action is good business.//More than half the customers who answered in the affirmative spent over $100 at the store.
3.afflict v.使痛苦，折磨( to trouble, to injure)
词根记忆：af（不断）+flict(打击)--再受到打击--折磨
例:A disease broke out and severely afflicted the campers.
派生词:affliction(n.痛苦，烦恼)
同根词：conflict(n.冲突)：infliction(n.施加的痛苦)
4.affluent a.富裕的( rich)
联想记忆：af（不断）+flu(流)+ent--多得不停往外流--富裕的
例:The Joneses are affluent and give money to their community.
同根词：confluence(n.汇流)；superfluous(a.多余的)
5.affordable a.负担得起的，髓的( being able to buy sth.)
词根记忆：来自afford(v.买得起)
例:In countries in which new life-sustaining drugs cannot be patented,such drugs are sold at widely affordable prices.
6.aftermath n.结果，后果( consequence)
例:In the aftermath of the flood, people rebuilt their homes.
7.aggravate v.加重，恶化(to make worse; intensify)
词根记忆：ag+grav(重)+ate--使重--加重，恶化
例:Doctors generally agree that such factors as cigarette smoking, eating rich foods high in fats, and alcohol consumption not only do damage by themselves but also aggravate genetic. predispositions toward certain diseases.
派生词:aggravation(n.加剧，恶化)
同根词：grave(a.重大的：庄重的)
8.aggregate v.合计（to coilector gather intoa mass orwhoIe）；n.集合体(a body of units somewhat loosely associated with one another)；a．合计的，聚合的(collective)
词根记忆：ag+greg(团体)+ate--成为团体--集合体
例:aggregate of consumers消费者的集合体//A company may be able to estimate accurately the aggregate number of shoes it is going to sell.
派生词:aggregation(n.聚集；总计)
同根词：gregarious(a.喜社交的)
9.aggression n.侵略，侵犯（invasion）；敌对行为(hostile, injurious, or destructive behavior)
联想记忆：ag+gress(走)+ion --走到别的国家--侵略
例:Rhesus monkeys(猕猴)respond with aggression to a wider range of stimuli than any other monkeys do.
派生词:aggressive(a.攻击性的，侵略的)；aggressiveness(n.好斗)
10.aggressive a.好斗的(militant;assertive）；进取的(full of enterprise and initiative）
词根记忆：ag(加强)+gress(行走)+ive--到处乱走的--好斗的
例:They tend to become aggressive when provoked.
派生词:aggressivefy(ad.侵略地)
同根词：aggressor(n.侵略者)