1.commodity n．商品(an economic good)

词根记忆：com+mod(方式，范围)+ity--各种各样的东西--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)

词根记忆：来自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.平庸的东西，陈词滥调(something that is ordinary or common)

联想记忆：common(遁常的)+place(地方)--平庸之处--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摘录簿

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

词根记忆：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.共产党员，共产主义者(an adherent or advocate of communism)；a．共产主义的(of or relating to communism)

词根记忆：commun(=commune公社)+ist(人)一在公社工作的人一共产党员

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.

同根词：communal(a．公共的)

6.community n.团体：共同体(a unified body of individuals)

词根记忆：com(共同)+mun(公共)+ity--共同体

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

7.commute v.坐公交车往返于两地(to travel back and forth regularly);变换(to convert)；交换(to exchange)

词根记忆：com（共同）+mut(改变)+e一坐车换车一坐公交车往返于两地

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

派生词:commuter(n.经常往返者)

同根词：mutation(n．突变)；immutable(a．不可变的)

8.compact a．紧密的(condensed)；n．契约(an agreement or covenant)

词根记亿：com(共同)+pact(打包，压紧)--一起压紧--紧密的；pact本身是一个单词，意为”契约”

例:compact disc光盘//a matrimonial compact婚约

派生词:compactor(n.压土机)：subcompact(n.微型汽车)

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

词根记亿：来自company(n.陪伴)

派生词:a companionate family和睦的家庭

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

词根记亿：来自compare(v.比较，相比)

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

派生词:comparability(n．相似性；可比性)

同根词：comparative(a．比较的)

11.comparison n.比较，对照（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)

词根记亿：来自compare(v.比较)

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

同根词：comparative（a．比较的）