1. [词海垂钓]从词典中“钓”出一串同根词吧。
① ad-
② sub-
③ tra-（trans-）
2. [同义相连]将左栏中的单词和右栏中相对应的词义连接起来。
① reproduction a.行为不当
② conductress b.再生产；复制
③ overproduction c.乐队女指挥
④ misconduct d.劝诱
⑤ inducement e.生产过剩
⑥ productivity f.生产率
3. [由此及彼]根据已知单词的词义推断出其同根词的词义。
① productive a.多产的→unproductive a.
② seduce v.引诱→seducer n.
③ deduce v.推断→deducible a.
④ reducible a.能缩减的→irreducible a.
4. [望文生义]根据所学词根的知识推测下列单词的词义。
① self-education n.
② underproduction n.
③ non-conductor n.
④ semiconductor n.（提示：semi-=half）
5. [寻根问底]指出下列单词的词根并领会其词义的由来。
① coeducation n.男女同校
② ductless a.无管的；无导管的
③ transducer n.无线电转换器
④ inductile a.不易拉长的
⑤ conduce v.有助于；导致
⑥ educe v.推断出；引出
6. [节外生枝] duct还可以表示“管”，“道”的意思。请查出名词aqueduct，ventiduct，viaduct和oviduct的词义，并从而判断出拉丁词根 aqu，vent，via和ov的含义。
29. equ [L]=even, equal 相等的
在常用词equal，equate，adequate和equivalent中，可以看到词根equ，它来自拉丁形容词aequus，意思相当于even（相等的）。这个词根与其他词根构词时，常带有连接字母-i-，也可以把equi看作equ的异体。
equal [equ=even相等的；-al a.=being有……性质的→“being even相等的”→] a. of the even equlity, value, number, degree, etc.相等的；等值的；等量的：equal pay for equal work同工同酬
▽equality [equal;-ity n.] n.同等；平等；均等
equalize [equal;-ize v.] v.使相等；使平均
equate [equ=even相等；-ate v.=to make使……→] v. make equal;even out使相等；使平衡：to equate the debits and credits on the balance sheet使结算表中借贷双方平衡
▽equation [equat(e);-ion n.] n.平均；相等；等式；方程式
adequate [ad-=to对；equ=equal相等；-ate a.=being有……性质的→“being equal to the needs与需求相等的”→] a.① equal to a job, or competent胜任的：She is adequate, though not so perfect.她虽不完美，但能胜任。② equal to what is required;sufficient足够的；充分的：The supply is not adequate to the demand.供不应求。
▽adequacy [ad-;equ;-acy n.] n.适合；足够
equivalent [equi=equal相等的；val=value价值；-ent a.=being是……的→]Ⅰa. being equal in value, power, meaning等值的；等效的；同义的：One dollar is equivalent to one hundred cents.一元等于一百分。→Ⅱ n. equivalent thing对等物：What is the Chinese equivalent for the word“sun”? 英语“sun”在汉语中的对等词是什么？
▽equivalency [equi;val;-ency n.] n.均等；等重；同义
equable [equ=even平稳的；-able a.=able to be能……的→“able to be even in temper, climate, etc.在心境、环境等方面能平稳的”→] a.①even-tempered; good-natured 平稳的；平静的：He has an equable disposition.他性情平稳。②unchanging稳定的：The temperature is equable this week.这星期气温没什么变化。
▽equability [equab(le);-ility n.] n.平稳；平静
equator [equat(e) v.使相等；-or n.=thing表示物→“line that equates等分线”→] n. the great circle of the earth which equates the distance between the poles 赤道（地球上等分经线的纬线）
▽equatorial [equator;-ial a.] a.赤道的
equilibrium [equi=even相等的；libr=balance天平；-ium=the state表状态→] n. state of even balance平衡状态：the equilibrium of supply and demand供求平衡
▽equilibrant [equi;libr;-ant n.] n.平衡力
equilibrist [equi;libr;-ist n.] n.使自己保持平衡的人
equilibrate [equi;libr;-ate v.] v.平衡
equivocal [equi=equal相等的；voc=voice声音；-al a.=having有……的→“having another equal voice有另一相等声音的”→] a. having a double meaning; purposely vague 多义的；模棱两可的：equivocal answer模棱两可的回答
▽equivocality [equivocal;-ity n.] n.（语言）多义性；含糊
equivocate [equi;voc;-ate v.] v.含糊其词；支吾
