1. [望文生義]根據所學詞根的知識推測下列單詞的詞義。
① unconfined a.
② undefined a.
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 indefinable a.不明確的
② indefinite b.無限的
③ infinite c.難下定義的
④ infinitive d.動詞不定式
3. [詞義辨析]選擇最恰當的詞義。
① finale n. A.終場 B.完成 C.決賽
② finis n. A.結尾 B.完成 C.精致
③ finial n. A.頂部裝飾物 B.戲劇終場 C.決賽場
4. [尋根問底]指出下列單詞的詞根并領會其詞義的由來。
① refine v.提純；精制
refinement n.精制；精致
② infinitesimal a. [數]無窮的 n.無窮小
③ infinitude n.無限
④ superfine a.精致的；過于精細的
34. flu, flux [L]=to flow流動
常用詞fluid，fluent，influence，influenza等，都是詞根flu的派生詞。flu來自拉丁動詞fluere，意思是to flow（流動）。flu有個異形根flux，它來自動名詞fluxum的詞干部分。
fluid [flu=to flow流；-id a.=having the quality有……性質的→“having the quality of flowing有流動性質的”→]Ⅰa. able to flow流動的：fluid mechanics流體力學→Ⅱn. substance that flows;gas or liquid流體；氣體；液體：Water is a kind of fluid.水是一種流體。
▽fluidity [fluid;-ity n.] n.流動性；流質；液態(tài)
fluidify [fluid;-ify v.] v.使成流體
fluent [flu=to flow流；-ent a.=-ing有……性質的→] a. flowing easily流暢的：She can speak fluent English.她能說一口流利的英語。
▽fluency [flu;-ency n.] n.流暢；流利
influence [in-=into進入；flu=to flow流；-ence n.=the act or result表行為結果→“a planet's flowing into some area, which was supposed to work on other planets某行星流入某方位，古時候認為這對其他行星有所影響”→]Ⅰn. the power to produce effects on others影響力：I have no influence to his decision. 我無法影響他的決定。→Ⅱv. produce effects on影響：Bad weather influenced the grain production.壞天氣影響了糧食生產。
▽influential [in-;flu;-ent;-ial a.] a.有影響的
influenza [influenz=to influence影響；-a n.=disease疾病→“disease that influences many people at a time 同時影響許多人的疾病”→] n. epidemic virus disease attacking the upper respiratory tract流行性感冒（侵染上呼吸道的病毒性流行?。?/p>
affluent [af-(ad-)=to向；flu=to flow流；-ent a.=-ing……的→“flowing freely to向……涌流而來的”→] a. abundant;wealthy豐富的；富裕的：affluent society富裕的社會
▽affluence [af-;flu;-ence n.] n.豐富；富裕
confluence [con-(com-)=together共；flu=to flow流；-ence n.=the state表狀態(tài)→] n. flowing of water together with another匯流，匯合/a city at the confluence of two rivers兩河交匯處的城市
▽confluent [con-;flu;-ent a.] a.合流的；匯合的
influent [in-=into 入；flu=to flow 流；-ent a.=-ing ……的→] Ⅰa. flowing into流入的：influent water from a lake從湖泊流進的水→Ⅱn. tributary stream支流
effluent [ef-(ex-)=out出；flu=to flow流；-ent a.=-ing……的→]Ⅰa. flowing out流出的：an effluent stream from a lake湖泊流出的支流→Ⅱn. stream flowing from a large stream, lake, etc.從河、湖等出來的水流：the effluent from a chemical factory從化工廠流出來的廢水
▽effluence [ef-;flu;-ence n.] n.流出；（光、電等）射出
refluent [re-=back回；flu=to flow流；-ent a.=-ing……的→] a. flowing back;ebbing逆流的；退潮的：the refluent tide退潮
▽refluence/refluency [re-;flu;-ence/-ency n.] n.逆流；退潮
superfluous [super-=beyond超出；flu=to flow流；-ous a.=having the quality有……性質的→“having the quality of flowing beyond or over流過界的”→] a. overflowing;above what is enough過剩的；多余的：superfluous remarks多余的話
▽superfluity [super-;flu;-ity n.] n.多余；奢侈
