英语动词中， 字母双写的情况： 双写加 ing,双写加 ed， 规 则：在重读闭音节里，末尾只有一个辅音字母，辅音字母前只有 一个元音字母时，要双写这个辅音字母。辅－元－辅 关于“双 写的问题” ，很简单地说：一个单词只需要看最后 3 个字母是由 “辅元辅”构成，那么就需要“双写” ，如果不是，那么就不用 了。但也有例外，比如：listening； listened; rain-raining; agree-agreeing ;die-dying; flee（逃离）-fleeing; lie（躺/撒谎）-lying；tie(系/栓)
双写的有：admit（承认/录取）-admitting-admitted; ban（禁止）-banning-banned; begin-beginning； beg（乞讨/求）--begging-begged；bid（投/竞标）-bidding; chat –chatting, chatted ;commit（做错事/犯罪/承诺）-committing-committed; cut ---- cutting; control （管/控）–controlling; controlled; dig（挖） - digging; dip（浸入/蘸）-dipping-dipped; dot（点缀/打点）-dotting-dotted; drop-dropping- dropped ;
equip（装备）-equipping-equipped; fit（适合/安装）-fitting; fitted ;forbid（禁止）-forbidding; get -getting ; hit （击中）---- hitting; jog（慢跑）-jogging-jogged; let-letting; mop(拖地)-mopping-mopped; nod（点头） –nodding-nodded; occur（发生）-occurring-occurred ;plan-planning-planned；plot（密谋/计划）-plotting-plotted; rid（去除）-ridding;
rob(抢夺)-robbing-robbed; rot（腐烂）-rotting-rotted; run-running; scan(细看/扫描)-scanning-scanned; ski-skiing; skip（蹦跳/跳过/不做）-skipping-skipped; stop-stopped-stopping ; swim ---- swimming
split （分开/裂/摊）---- splitting ;sum(总结/概括) –summing-summed
难忘的近义词
submit(呈交)-submitting-submitted;star(主演)-starring-starred;
tip（给小费）-tipping-tipped;
put ---- putting; permit, prefer， refer , regret（后悔）, run ---- running； rub（摩擦） –rubbing- rubbed; shut ---- shutting ;spit （吐痰）-spitting； sit （坐/参加考试）---- sitting; sob（抽泣）-sobbing; spot（看见） – spotting-spotted; shop-shopping-shopped; t（设置/树立） ---- tting ;win ---- winning;
注意: quarrel- quarre(l)ling- quarre(l)led; cancel(取消); travel(可单写；可双写)
英语中形容词和副词有三种等级： 原级， 比较级及最高级。 规则形容词和副词变比较级
和最高级的规则如下：单音节词末尾加-er 和-est, 如：great-greater-greatest 。单音节词如以-e 结尾， 只加-r 和-st, 如： brave-braver-bravest 闭单节单音节词如末尾只有一个辅音字母，须先双写这个 辅音字母，再加-er 和-est，如：big-bigger-biggest如：big-bigger-biggest 少数以给女朋友的一封信-er, -ow, -ble 结尾的双单节词，末尾加-er 和-est。
如： clever-cleverer-cleverest; narrow-narrower-narrowest; 以-y 结尾的词，如-y 前是辅单字母，则变 y 为 i，再加-er 和-est, 高中数学内容如：happy-happier-happiest. 其他双音节和多音节词皆在前面加单词 more 和 most,构成比较级或最高级。如:difficult-more difficult-most difficult; outgoing-more outgoing-most outgoing
河南顺口溜前缀篇
1. abnormal (反常、畸形) abu 滥用、辱骂
终身为奴2. bi- 两/双的 bicycle 肉末粉条怎么做
3. by- 偏的/副的 by-product(副产品) byway=bypass(旁道、偏 僻小路)
4. dis- like喜欢→ dislike不喜欢 agree同意 → disagree不同意 appear出现 → disappear消失disapprove（vi）不赞成/同意disapproval (n) discomfort (使不舒服) discover discontinue (中断) disconnect discredit disbelief dishonest dishonor displead distrust disobey 违背
5. de- 降低/减少 decrea degrade降级 devalue贬值 defrost解冻 deforestation毁林
6. en- 使…能够 enable encourage enjoy enrich endanger enlarge
7. ex- 前任的 ex-wife前妻
8. kilo- 千倍的 kilometer kilogram
9. inability inaccessible inaccurate inactive inadequate inadvisable inapplicable(不适用) inappropriate inattentive(不注意) inauthentic(不真实的) in- complete完整的→incomplete不完整的correct准确的→ incorrect 不准确的incalculable incalculable incapable incompetent(无能力的) incomplete incomprehensible（难懂的）inconsiderate inconsistent inconstant inconvenience/t incorrect
incurable(不能治愈的) incapable incompetent incomplete incomprehensible inconsiderate inconsistent inconstant inconvenience/t direct直接 →indirect间接的 indecent下流的 indecisive indecent(下流的) indecisive (优柔寡断的) indefinite(界定不明的) indelicate independence/t indescribable indelicate (不优雅的) independence/t indivisible indirect indivisible ineffective inefficient inelegant inequality inesntial inexact inexhaustible inexpensive inexperienced
ineffective inefficient inelegant inequality inesntial inexact inexhaustible inexpensive inexperienced inexpert inexpressible infamous infertile inflexible informal inglorious inhuman
innumerable inoffensive inorganic incure innsible inparable insignificant insincere insufferable insufficient invisible 高中规划intolerable intolerant invalid invaluable involuntary
10.irregular irrelevant irreligious irresponsible
11. ill-treat illegal illogical ill-judged ill-mannered ill-prepared
通报
12.im- possible可能的→impossible不可能的 polite 有礼貌的→impolite无礼的 proper适当的→ improper不当的imbalance immature immeasurable immemorial immobile immodest immoral impatient imperfect impersonal impolite impossible impractical impreci(不准/精确) improbable improper(不正当) impure(不纯的)
13. reappear reapply rebuild recharge recollect reconsider reconstruct recount recycle redesign rediscover reelect regain reinvent remake remarry rename reopen reprint reproduce ret restart restate retell rethink retry 复审reunite reu revalue revisit rewrite
