ACT考试英语词根大全（一）

100留学小编今天给大家整理了ACT英语词根：ag act，还在为记不住ACT考试的词汇而发愁的考生们赶紧看过来吧。

ag,act=to do, to drive做，驱使

词根ag来自拉丁动词agere的词干部分，意思相当于英语的to do（做）或to drive（驱使）。act是个英语核心单词，其实它的前身act是ag的同源异形词根，来自agere的动名词形式actum的词干部分，基本含义也是to do或to drive。下面先分析几个由ag构成的常见派生词。

agent [ag=to do做；-ent n. =person人→“person who does办事者”→] n. Person who works for another person or organization代理人：a sales agent代售商

▲agential [agent; -ial adj.] adj.代理人的；起媒介作用的

agency [ag=to do做；-ency n. =the quality or state of表性质或状态→“the ability or place of doing business办事的能力或场所”→] n. ①power or force which causes a result力量；作用；human agency人力 ②the office of agent; service organization代理处；机构：travel agency旅行社

agenda [ag=to do做；-enda（-a表复数）n. =things事情→“things to be done要办的事项”→] n. list of things to be discussed or decided upon议事日程：the most important item on the agenda议事日程的首项

agile [ag=to do做；-ile adj. =able能......的→“able to do能干的”→] adj. Able to do or move quickly or easily敏捷的；灵活的：as agile as a monkey像猴子般灵活

▲agility [agil(e)；-ity] n. 敏捷；灵活

agitate [ag=to drive or keep moving驱使，使运动；-itate（-ate）v. =make or cause使......→“cause to keep moving steadily引起不断的动荡”→] v. disturb鼓动：The audience were agitated by his speech听众被他的演讲所鼓动。

▲agitation [agitat(e)；-ion n.] n. 鼓动；激动不安

agitator [agitat(e)；-or n.] n. 鼓动着

以下介绍的是几个常用act的同根词。

act [act=to do做→“to do what is required做要求的事”→] v. ①do something行动：to act at once立刻行动 ②function起作用：The brakes wouldn’t act. 刹车失灵。③take part in a play or film扮演：Who is acting Hamlet? 谁演哈姆雷特？

▲actor [act；-or n. ] n.男演员；行动者

actress [act(o)r；-ess n. ] n.女演员

react [re-；act v. ] v.重做，再做；重演，再演

overact [over-；act v. ] v.演得过于夸张

action [act=to do做；-ion n. =the process or result表过程或结果→] n. ①process of doing, or deed行动，活动：Actions speak louder than words.行动比语言更有说服力。②result of doing, or effect作用：the action of an acid on metal酸对金属的作用 ③charge诉讼：to bring an action against someone起诉某人

▲actionable [action；-able adj. ] adj. 可控诉的

active [act=to do做；-ive adj. =able会......的→] adj. able to do活跃的，积极的：Although he is over 70, he is still active.他虽然年过70，但依然很活跃。

▲activate [activ(e)；-ate v.] v. 使活动

activism [activ(e)；-ism n.] n. 能动主义；积极，活跃

activist [activ(e)；-ist n.] n. 活动分子，积极分子

activity [activ(e)；-ity n.] n. 能动性；活跃；活动