1.able/ability/enable/unable/disable/disabled/disability
able的同根词用法一致,后接不定式。
比较：be able to do sth. / be capable of (doing) sth.
2. 动词词缀：en-+ adj./n.或adj./n.+/-en
enable/enlarge/enrich/encourage/brighten/widen/worsen/sharpen/strengthen/heighten/lengthen
3. abandon vt. 放弃，抛弃，放纵
abandon oneself to 纵情于，沉溺于 (=be addicted to)
4. aboard adv. 在船(车)上，上船
abroad adv. 在国外，到国外
board n. 木板 on board 在船上
broad adj. 宽的，宽阔的
5. absent adj. 不在的, 缺席的(反：present)
6. absolute adj. 完全的, 绝对的
7. absorb vt. 吸收, 吸引
be absorbed in 全神贯注于
8. abundant adj.丰富的，大量的(=plentiful)
9. access n. 通路, 接近，入门
have access to 接近，有权使用
e.g. citizens may have free access to the public library.
10. accident n. 意外事件, 事故by accident偶然(=by chance)(on purpose故意)
11. accompany vt. 陪伴，陪同
12. accomplish vt. 完成, 达到, 实现
~ the task
accomplishment n. 成就
13. account n. 计算, 帐目, 说明，解释
on account of 由于
take... into account 考虑到(= take… into consideration)
account for 解释，说明
14. accuse vt. 指责，控告
accuse sb. of sh. 因某事控告某人
(同：charge sb. with sth. 因某事控告某人)
e.g. he was accused of robbing the bank and sentenced ten years in jail.
his mother charged him with being lazy.
15. achieve vt. 完成, 达到
achievement n. 成就, 功绩
16. action n. 动作, 行动, 举动
take action to do sth. 采取行动做某事 (同：take measures to do sth.)
17. actor n. 男演员 → actress n.女演员
类似：waitress(女侍者，女服务生), hostess(女主人), princess(公主，王妃)
18. adapt vt. 使适应, 改编
adapt oneself to sth. 适应 (= adjust oneself to sth.)
e.g. he adapted/adjusted himself very quickly to the weather in the country.
比较：adopt vt. 采用, 收养
19. advance n. 前进, 提升 v. 前进, 提前
in advance 预先，提前
20. advantage n. 优势, 有利条件 (反：disadvantage n. 不利条件, 缺点)
have an advantage over 胜过，占优势
take advantage of 利用
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