1. [举一反三]根据已知单词的词义推断出其同根词的词义。
mobile可动的；活动的→① immobile a.
→② immobility n.
→③ immobilize v.
2. [望文生义]根据所学词根的知识推测下列单词的词义。
① automobile n.
automotive a.
② mobilization n.
③ commove v.（提示：与名词commotion比较）
④ locomote v.
locomotive n.
3. [由此及彼]根据已知单词的词义推断出其同根词的词义。
① moved a.移动的；感动的→unmoved a.
② movable a.可移动的→immovable a.
③ mobilization n.活动；动员→immobilization n.
④ emotion n.感情→emotionless a.
4. [寻根问底]指出下列单词的词根并领会其词义的由来。
① motile a.能动的
② motor n.发动机；电动机；汽车
③ motorable a.可行驶汽车的
motorless a.非机动的
④ mob n.暴民，乱民；乌合之众
mobbish n.暴民般的；无法无天的
mobocracy n.暴民统治
⑤ motif n.主旨；主题
61. nasc, nat [L]=to be born出生
nation，native，nature 等常用词的词根是 nat，它来自拉丁动词nasci的完成时词干（这个动词没有动名词形式），其意思是to be born（出生）。nasc是nasci的不定式词干，它在英语中的派生词数量较少，常用的只有nascent，renascence等几个。
nation [nat=to be born出生；-ion n.=the state表行为状态→“the condition of people's being born人们出生的环境”→“the origin of people人们的出身种族”→] n. body of persons born in a common country or having a common origin国民；民族：the Chinese nation中华民族
▽national [nation;-al a.] a.国家的；民族的
native [nat=to be born出生；-ive a.=characterized by有……特点的→“characterized by being born带有出生的特点的”→] a.① by birth or origin出生（地）的：native land祖国② inborn or nature天生的：native ability本能③ not foreign本国的：native language母语
▽nativity [nativ(e);-ity n.] n.出生；出生地
nativism [nativ(e);-ism n.] n.本土主义；先天论
nativist [nativ(e);-ist n.] n.本土主义者；先天论者
nature [nat=to be born出生；-ure n.=the state or result 表行为状态或结果→“the state or result of the birth of all things in the world世上万物降生的状况或结果”→] n. the established order of things in the world自然（世上万物的现有秩序）：Mother Nature大自然
▽natural [natur(e);-al a.] a.自然的；自然界的
cognate [co-(com-)=together共同；gnat (nat)=to be born出生；-e→“being born together共同出生的”→] a. of the same origin;related in origin同种的；同族的：Italian and Spanish are cognate languages.意大利语与西班牙语是同族语。
▽cognation [cognat(e);-ion n.] n.亲族；同词源；同语系
natal [nat=to be born出生；-al a.=of……的→“of being born出生的”→] a. of or connected with one's birth出生的；诞生时的：natal day生日
▽natality [natal;-ity n.] n.出生率
innate [in-=within在……之内；nat=to be born出生；-e→“being born within a person出生时内在的”→] a. inborn;inherent天生的；固有的：Man's knowledge is not innate in the mind.人的知识不是头脑里固有的。
prenatal [pre-=before在……之前；nat=to be born出生；-al a.=of……的→“of the time before being born出生前那段时间的”→] a. prior to birth胎儿期的：prenatal education胎教
pregnant [pre-=before在……之前；gnant (nat)=to be born出生→“before being born在出生前的”→] a.① having an unborn child or young in the body怀孕；怀胎：She is five months pregnant.她怀孕五个月。② full of important but hidden meaning 含蓄的：His words were followed by a pregnant pause.说了那些话，他意味深长地停顿了一下。③ full, or rich充满的：All nature is pregnant with life.整个自然界充满生机。
▽pregnancy [pregnan(t);-cy n.] n.怀孕；富有意义；充满
neonate [neo=new新的；nat=to be born出生；-e→] n. baby newly born新生儿：neonate period婴儿期
▽neonatal [neonat(e);-al a.] a.新生儿的
nascent [nasc=to be born出生；-ent a.=-ing……的→“being born出生的”→] a. newly conceived;beginning to exist or develop初生的；开始形成的：a nascent republic新生的共和国
▽nascence/nascency [nasc;-cence/-ency n.] n.发生；起源
renascence/renaissance [re-=again再；nasc/naiss (nasc的变体)=to be born出生；-ence/-ance=the act表行为→“being born again再次诞生”→] n. new birth;revival新生；复活，复兴：the Renaissance（欧洲14到16世纪的）文艺复兴
▽renascent [re-;nasc;-ent a.] a.新生的；复活的，复兴的
renaissant [re-;naiss;-ant a.] a.新生的；复兴的
