2018考研同学应英语掌握5500左右的词汇以及相关词组。下面新东方在线为2018考研同学整理了一些词汇，除掌握词汇的基本含义外，考生还应掌握词汇之间的词义关系以及词汇之间的搭配关系，掌握词汇生成的基本知识。
1. necessitate
vt. 使…成为必要，需要;强迫，迫使;
[例句]A prolonged drought had necessitated the introduction of water rationing.
由于持续干旱，用水需要实行配给了。
2. necessity
n. 必需品;必要(性);(迫切)需要;自然规律;
[例句]There is agreement on the necessity of reforms.
对改革的必要性已经达成了共识。
3. neglect
vt. 忽略;疏忽;遗漏;疏于照顾;
n. 怠慢;玩忽;被忽略的状态;
[例句]The woman denied that she had neglected her child.
那位女士否认疏于照管自己的孩子。
4. negligent
adj. 疏忽的;粗心大意的;不留心的;懒散;
[例句]The jury determined that the airline was negligent in training and supervising the crew.
陪审团裁定航空公司在对全体机组人员的培训和管理问题上存在疏漏。
5. nominal
adj. 名义上的;微不足道的;票面上的;名字的，列名的;
n. 名词性词;
[例句]As he was still not allowed to run a company, his wife became its nominal head.
因为他仍未获准经营公司，他妻子成了名义上的老板。
6. multiply
vt. 乘;(使)相乘;(使)增加;(使)繁殖;
adv. 多样地;复合地;多倍地;[电学]并联地，多路地;
adj. 多层的;多样的;多股的;
[例句]Such disputes multiplied in the eighteenth and nineteenth centuries.
这类纠纷在18和19世纪大量增多。
7. muscle
n. 肌肉;力量;权威，权力;
vt. 硬挤;使劲搬动;
vi. 用力挤;
[例句]Keeping your muscles strong and in tone helps you to avoid back problems.
保持肌肉强壮发达有利于预防背部疾病。
8. mutual
adj. 相互的;共同的;共有的;彼此的;
[例句]The East and the West can work together for their mutual benefit and progress.
东西方可以为彼此共同的利益和发展而合作。
9. narrate
vt. 讲，谈到，叙述; 做旁白说明; 讲故事;
vi. 叙述，讲述;
[例句]The three of them narrate the same events from three perspectives.
他们三人从三个不同的视角讲述了同样的事件。
10. nasty
adj. 肮脏的;下流的，令人讨厌的;恶劣的，艰险的;严重的;
n. 令人不愉快的事物;
[例句]This divorce could turn nasty.
这场离婚可能会撕破脸。