1. [詞海垂釣]從詞典中“釣”出一串同根詞吧。
ob-（=towards）
2. [由此及彼]根據(jù)已知單詞的詞義推斷出其同根詞的詞義。
① consecutive a.連貫的→inconsecutive a.
② consequent a.符合邏輯的→inconsequent a.
③ consequential a.重大的→inconsequential a.
3. [同義相連]將左欄中的單詞和右欄中相對應(yīng)的詞義連接起來。
① consequence a.結(jié)果；后果
② subsequence b.隨后（發(fā)生的事）
③ execution c.執(zhí)行；處死刑
④ persecution d.起訴；告發(fā)
⑤ prosecution e.虐待；迫害
4. [尋根問底]指出下列單詞的詞根并領(lǐng)會其詞義的由來。
① executioner n.死刑執(zhí)行人，劊子手
② sequela n.后患，后遺癥
③ sequacious a.順從的，盲從的；合乎邏輯的
④ self-consequence n.妄自尊大
⑤ obsequious a.奉承的；順從的
5. [節(jié)外生枝] sequ還有一個異形根sue，以下是主要的派生詞。
① sue v.控告，起訴；請求
② ensue v.接著發(fā)生；接著而來；結(jié)果是
③ pursue v.追趕；追捕；追隨；追求
pursuance n.追趕；追求；實行；從事
pursuant a.追趕的；追求的
84. sid, sess [L]=to sit坐
在常用詞president，reside，session和possess中，有一對同源異形根sid和sess。sid來自拉丁動詞sidere的不定式詞干，sess來自動名詞詞干，其意思相當于to sit（坐）或to settle（安放）。
preside [pre-=before前；sid=to sit坐；-e→“to sit before others坐在其他人前面”→] v. sit in authority;act as chairman主持；作會議主席：to preside at a meeting 主持會議
▽presider [presid(e);-er n.] n.（會議的）主席；主持者
presidium [presid(e);-ium n.] n.主席團；常務(wù)委員會
president [presid(e) v.主持，當權(quán)；-ent n.=person人→] n. person chosen to preside over a nation, university or any other organization總統(tǒng)；大學校長；會長；社長等
▽presidency [pre-;sid;-ency n.] n.總統(tǒng)等的職位或任期
presidential [president;-ial a.] a.總統(tǒng)（或校長等）的
reside [re-=back, down回，下；sid=to sit or settle坐，安放；-e→“to sit backward, to settle down靠背安坐，安頓下來”→] v. make one's home at a place安家，居?。簍o reside in the city在城市居住
▽resident [resid(e);-ent n.] n.居民
residence [resid(e);-ence n.] n.居?。蛔≌?/p>
subside [sub-=under, down下；sid=to sit or settle坐，停留；-e→“to settle down停在下面，停息”→] v.① sink down下沉；沉降：The building subsides gradually.這座房子逐漸下沉。② fall into a state of quiet平息：The wind has subsided.風停了。
▽subsidence [subsid(e);-ence n.] n.下降；沉降；平息
dissident [dis-=apart分開；sid=to sit坐；-ent n.=person人→“person who sits apart from others 與別人分開坐的人”→] n. person openly disagreeing with an opinion; dissenter 持異議者；反對者：political dissidents持不同政見者
▽dissidence [dis-;sid;-ence n.] n.異議；不一致
assiduous [as-(ad-)=to, at面向；sid=to sit坐；-u-;-ous a.=having the quality有……性質(zhì)的→“having the ability to sit at a place to work能面壁而坐堅持工作的”→] a. constant or unwearied in application;diligent刻苦的；勤奮的：He is assiduous in his study.他學習勤奮。
▽assiduity [as-;sid;-u-;-ity n.] n.刻苦；勤奮
insidious [in-=in內(nèi)；sid =to sit坐；-i-;-ous a.=like像……的→“like sitting in a hidden place, like setting an ambush像坐在暗處的，像打埋伏的”→] a.① intended to entrap伺機為害的：insidious diseases暗疾② deceptive;treacherous暗中為害的；陰險的：an insidious tempter陰險的誘惑者
▽insidiousness [insidious;-ness n.] n.陰險；狡詐
session [sess=to sit坐；-ion n.=the act or state表行為或狀態(tài)→] n.① act of sitting坐；就座② sitting, or time of sitting, as of a court or public body開會；開庭；會期；開庭期：plenary session全體會議
▽sessional [session;-al a.] a.開會的；開庭的
possess [pos（來自potis）=able能……的；sess=to sit坐→“to be able to sit in a place能坐在一個位置上”→] v.① inhabit, or occupy居住于；占據(jù)②have or hold as property;own具有；占有：He possessed landed property.他擁有地產(chǎn)。③ maintain, or control保持；控制：She was possessed by the desire to be rich.她被發(fā)財?shù)挠洹?/p>
▽possessor [possess;-or n.] n.占有人；所有人
possession [possess;-ion n.] n.占有；占有物；財產(chǎn)；領(lǐng)地
possessive [possess;-ive a.] a.占有的 n. [語法]所有格
assess [as-(ad-)=to, at在；sess=to sit坐→“（judges in a court）to sit at or sit by（法官等在法庭）就座”→“to judge or estimate作判斷，估計”→] v.① fix the value or profits of對……進行估價：His property is assessed at one million dollars.他的財產(chǎn)估價為100萬元。② decide the amount of (a tax )征收（稅款）：to assess a tax of ten pounds征稅10鎊
▽assessment [assess;-ment n.] n.估價；評價
assessor [assess;-or n.] n.估價財產(chǎn)的人；確定稅款的人
assessable [assess;-able a.] a.可估價的；可征稅的
