1. [望文生義]根據(jù)所學詞根的知識推測下列單詞的詞義。
① retainer n.
② abstainer n.
③ sustainer n.
2. [同義相連]將左欄中的單詞和右欄中相對應的詞義連接起來。
① containable a.可保持的
② obtainable b.能支撐住的
③ retainable c.可獲得的
④ sustainable d.能包含的；能容納的
⑤ maintainable e.能維持的；可維修的
3. [舉一反三]根據(jù)已知單詞的詞義推斷出其同根詞的詞義。
continue繼續(xù)→① continuation n.
→② continuative a.
→③ continuator n.
4. [詞義判斷]選擇最恰當?shù)脑~義。
① tennis A.穩(wěn)定的進程 B.網(wǎng)球 C.占有（權）
② tenor A.穩(wěn)定的進程 B.網(wǎng)球 C.占有（權）
③ tenure A.穩(wěn)定的進程 B.網(wǎng)球 C.占有（權）
5. [尋根問底]指出下列單詞的詞根并領會其詞義的由來。
① maintain v.維持；維修；堅持；供養(yǎng)（提示：main
maintenance n.維持；維修；堅持；扶養(yǎng)
② entertain v.招待；使娛樂（提示：enter-
entertainment n.招待；娛樂物；文娛節(jié)目
③ pertain v.從屬；有關；關于；適合（提示：per-=through）
pertinence n.恰當；相關
pertinent a.恰當?shù)?；貼切的；有關的；相干的
④ pertinacious a.堅持的；固執(zhí)的；難消除的
pertinacity n.執(zhí)拗；頑固
⑤ appertain v.屬于；關于；適合于
⑥ abstinence n.節(jié)制；禁欲
abstinent a.有節(jié)制的；禁欲的
⑦ tenable a.守得住的；站得住腳的
⑧ tenement n.保有物；地產(chǎn)；住屋
tenementary a.地產(chǎn)的；住屋的；供出租的
⑨ tenaculum n. [醫(yī)]外科用的夾鉤
⑩ lieutenant n.副職官員；代理官員（提示：lieu=place）
92. tend, tens, tent [L]=to stretch伸
在常用詞attend，attention，extend，pretend和intense中，可以看到tend，tens，tent這三個同源異形根。tend來自拉丁動詞tendere，意思為to stretch（伸開，伸長，延伸）；tens和tent都是這個拉丁動詞的動名詞詞干（tendere有兩個動名詞形式：tensum和tentum），主要用來構成相應的名詞和形容詞。
attend [at-(ad-)=to向；tend=to stretch伸→“to stretch one's mind to把心思伸向”→] v.① pay notice or care to;fix the mind on注意；專心：Please attend to what he is saying.注意聽他講。② be present at出席：to attend a meeting出席會議
▽attendance [attend;-ance n.] n.看護，照料；出席（人數(shù)）
attendant [attend;-ant n./a.] n.仆役，侍從 a.伴隨的
attention [at-;tent;-ion n.] n.注意；注意力
attentive [at-;tent;-ive a.] a.注意的；當心的
extend [ex-=out出；tend=to stretch伸→] v.① stretch out伸出：He extended his arms in front of him.他向前伸出雙臂。② make longer orgreater延長；擴大：We are to extend the railway to the city.我們計劃把鐵路延長到那座城市。
▽extent [ex-;tent] n.長度；廣度；限度；程度
extension [ex-;tens;-ion n.] n.伸長；擴大
extensive [ex-;tens;-ive a.] a.廣大的；廣泛的
extensible [ex-;tens;-ible a.] a.可延伸的；可擴展的
intend [in-=upon在……上面；tend=to stretch伸→“to stretch one's eye upon something把目光伸到某事之上”→] v.① plan or purpose打算：What do you intend to do next?下一步你打算怎么辦？② mean to be意指：What did he intend by that remark?他說那話是什么意思？
▽intendance [intend;-ance n.] n.監(jiān)督；管理
intendant [intend;-ant n.] n.監(jiān)督人；管理人
intent [in-;tent] a.集中的；專心致志的 n.意圖；含義
intention [in-;tent;-ion n.] n.意圖；目的；意義；意旨
pretend [pre- = before 在……之前；tend = to stretch 伸展→“to stretch one's mind before the public在眾人面前展開或夸張自己的想法”→] v.① profess, or claim聲稱；自稱：He pretends to be a scholar.他自稱學者。② profess falsely;give a false appearance偽稱；假裝：Don't pretend to know what you do not know.不要不懂裝懂。
▽pretender [pretend;-er n.] n.佯裝者；冒充者；妄求者
pretense [pre-;tense] n.假裝；自命；借口；托詞
pretension [pre-;tens;-ion n.] n.要求；權利；借口；自稱
pretentious [pre-;tent;-i-;-ous a.] a.自負的；矯飾的
intense [in-=to到；tens=to stretch伸；-e→“being stretched to a high degree伸展到高度的”→] a.① strained緊張的：intense but orderly work 緊張而有秩序的工作 ② extreme 極度的：intense heat 酷熱③ strong in quality or feeling強烈的：intense sorrow強烈的悲痛
▽intension [intens(e);-ion n.] n.緊張；強度；加強
intensive [intens(e);-ive a.] a.加強的；集中的；深入細致的
intensity [intens(e);-ty n.] n.（思想、感情的）強烈；強度
intensify [intens(e);-ify v.] v.加強；加劇
tense [tens=to stretch伸展；-e→]Ⅰa. stretched tightly;strained繃緊的；緊張的：tense situation緊張的形勢→Ⅱv. cause to be stretched or strained拉緊；使緊張：to tense the muscles繃緊肌肉
▽tensity [tens(e) a.;-ity n.] n.緊張；緊張度
tension [tens(e) v.;-ion n.] n.繃緊；緊張
tensile [tens(e) v.;-ile a.] a.拉力的；能伸長的
tensor [tens(e) v.;-or n.] n.張??；張量
tend [tend=to stretch伸→] v.① stretch or develop in some direction伸向；趨向：The prices are tending upward.物價趨于上漲。② incline傾向：to tend to optimism有樂觀主義傾向
▽tendency [tend;-ency n.] n.趨向；傾向；傾向性
tendentious [tend;-ent;-i-;-ous] a.有傾向性的；有偏見的
contend [con-(com-)=together共同；tend=to stretch伸長→“to stretch for something together 共同伸取某物”→] v. ① strive; struggle in emulation競爭；斗爭：to contend for spheres of influence爭奪勢力范圍② debate or dispute爭論：He often contends against me.他常常與我爭論。
▽contender [contend;-er n.] n.競爭者；斗爭者；爭論者
contention [con-;tent;-ion n.] n.競爭；爭論；論點
contentious [con-;tent;-i-;-ous a.] a.好爭論的；引起爭論的
distend [dis-=away開；tend=to stretch伸展→] v.① stretch away;stretch in three dimensions擴伸；膨脹：Iron distends by heat.鐵受熱膨脹。② swell腫脹：The injured wrist began to distend up.受傷的腕部開始腫起來。
▽distension [dis-;tens;-ion n.] n.擴張；膨脹；腫脹
distensible [dis-;tens;-ible a.] a.可膨脹的
ostentation [os-(obs-) = in front of 在……之前；tent = to stretch 展開；-ation n.=the act表行為→“the act of stretching one's belongings in front of others在他人面前展示財物”→] n.① act of showing;display to draw attention or admiration顯耀；賣弄：I hate ostentation in any form.我憎惡任何形式的虛飾。② boasting出風頭：to be free from ostentation杜絕風頭主義
▽ostentatious [os-;tent;-atious a.] a.賣弄的；虛飾的
ostensive [os-;tens;-ive a.] a.明顯表示的；表面的；詭稱的
