1.commodity n．商品(an economic good)

詞根記憶：com+mod(方式，范圍)+ity--各種各樣的東西--商品

例:The ability to deal with people is as purchasable acommodity as sugar or coffee.

2.commoner n.平民(a person without noble rank of title)

詞根記憶：來自common(a．普通的)

例:The Forbidden City in Beijing was a site which acommoner or foreigner could not enter without any permission.

3.commonplace a.平凡的，普通的(plain and ordinary);n.平庸的東西，陳詞濫調(something that is ordinary or common)

聯想記憶：common(遁常的)+place(地方)--平庸之處--平凡的，普通的

例:By the mid-1850's the inclusion of women in the rituals of party politics had become commonplace.//commonplace book摘錄簿

4.communal a．全體共用的，共享的(characterized by collective ownership and use of property)

詞根記憶：com+mun(公共)+al一公共的一共享的

例:The editors shared a set of communal computers for their work.

5.communist n.共產黨員，共產主義者(an adherent or advocate of communism)；a．共產主義的(of or relating to communism)

詞根記憶：commun(=commune公社)+ist(人)一在公社工作的人一共產黨員

例:Although all the proceedings of the Communist party conference held in Moscow were not carried live, Soviet audiences have seen a great deal of coverage.

同根詞：communal(a．公共的)

6.community n.團體：共同體(a unified body of individuals)

詞根記憶：com(共同)+mun(公共)+ity--共同體

例:Some communitie,s in Florida are popuiated almost exclusively by retired people.//coral reef cammunities珊瑚礁群落//business community企業界

7.commute v.坐公交車往返于兩地(to travel back and forth regularly);變換(to convert)；交換(to exchange)

詞根記憶：com（共同）+mut(改變)+e一坐車換車一坐公交車往返于兩地

例:Children commute to school rather than living on campus.

派生詞:commuter(n.經常往返者)

同根詞：mutation(n．突變)；immutable(a．不可變的)

8.compact a．緊密的(condensed)；n．契約(an agreement or covenant)

詞根記億：com(共同)+pact(打包，壓緊)--一起壓緊--緊密的；pact本身是一個單詞，意為”契約”

例:compact disc光盤//a matrimonial compact婚約

派生詞:compactor(n.壓土機)：subcompact(n.微型汽車)

9.companionate a.伙伴的：和睦的(harmoniously)

詞根記億：來自company(n.陪伴)

派生詞:a companionate family和睦的家庭

10.comparable a．可比較的；比得上的(capable of or suitable for comparison)

詞根記億：來自compare(v.比較，相比)

例:Other towns and cities nearby have yet to embark on any comparable plans to attract new citizens.

派生詞:comparability(n．相似性；可比性)

同根詞：comparative(a．比較的)

11.comparison n.比較，對照（an examination of two or more it er-rs to estabIishs mar es and dissimilarities)；比喻(the representing of one thing or person as similar to or like another)

詞根記億：來自compare(v.比較)

例:In comparison to public rest areas, private parking lots near highways tend to be time-consuming for drivers to reach.

同根詞：comparative（a．比較的）