1.ambivalent a.有矛盾看法的( having or showing mixed feelings about a certain object,person or situation)
联想记忆：ambi(二)+vaI（强大）+ ent--两边都有力量，不知道怎么办--有矛盾看法的
例:They are ambivalent concerning where to go on vacation.
派生词:ambivalence(n.矛盾心理)
同根词：valiant（a.勇敢的）;valor(n.勇气)
2.amenable a.(to)顺从的( tractable)；易作出响应的(willing to be influenced or con-trolled)；可按照…处理的（can be deaft according to）
例:The problem of spoilage of refrigerated food is not amenable to any solution based on design changes.
3.amend v.修订( to correct)：改进(to improve)
词根记忆：a+mend(补，修)--修订
注意：amends(n.赔偿，补偿)
例:A theory is proposed, considered, and then amended.
4.amenity n.舒适( the quality of being pleasant or agreeable)；方便设施(something that conduces to comfort, convenience, or enjoyment)
联想记忆：a+men(人)+ity--为人民服务--方便设施
例:Private hospitals provided services and amenities that distinguished between paying and non-paying patients.
5.amino acid n.氨基酸，胺酸
例:Cancer can be caused by excessively rapid degradation of certain amino acids in the cytoplasm(细胞质)of cells.
6.amphitheater n.竞技场（a very large auditorium）
分拆记忆：amphi(两个)+theater(剧场)--有两个剧场那么大的、场地--竞技场
例:Flavian Amphitheater弗拉维亚竞技场
同根词：theatre(n.电影院;剧场)
7.ample a.丰富的，充足的( sufficient and adequate)
词根记忆：ampl(大，多)+e--充足的
注意：amble(v.漫步)
例:The ample availability of land makes security of land tenure unimportant.
8.amplifier n.[电子]放大器，扩大器：扩音器（one that amplifies）
词根记忆：来自amplify(v.放大，扩大)
例:Although they are more temperamental and far more expensive than transistor-driven amplifiers, many audiophiles and audio professionals prefer the warmer, richer tones produced by vacuum-tube-driven amplifiers.
同根词：amplification(n.放大；扩增)
9.amplify v.增强（声音等）( to increase)；详述(to expand, as a statement, by the use of detail or illustration or by closer analysis)
词根记忆：ampl(大)+ify（使…）--放大--增强
例:Can you amplify the sound so we can hear it better?//Could you amplify your answer a bit?
10.amplitude n.广度(the extent or range of a quality, property, process, or pheno-menon);振幅(the extent of a vibratory movement)
词根记忆：ampl(大)+itude --广度
例:the sounds amplitude 声域