一、形容词变比较级最高级规则变化 1.一般在词尾直接加er或est，例如，tall-taller-tallest，long-longer-longest 2.以不发音的字母e结尾的单词在词尾直接加r或st，例如，nice-nicer-nicest 3.以辅音字母+y结尾的词，把y变为i，再加er或est，例如，heavy-heavier-heaviest 4.重读闭音节，末尾只有一个辅音字母，双写这个辅音字母，再加er或est，例如，big-bigger-biggest 5.部分双音节词和多音节词分别在原级前加more构成比较级和most构成最高级，例如，slowly-more slowly-most slowly；beautiful-more beautiful-most beautiful特殊变化二 形容词变副词的一般规则形容词变副词通常是加ly, 其变化有规律可循,请记住以下口诀：一般直接加，“元音加e”去e加，“辅音加y”改i加，“le”结尾e改y 具体规则如下：1.一般情况下直接加“ly”，如：quick-quickly; polite-politely; sad-sadly; immediate-immediately; recent-recently 2. 少数以e结尾的形容词，要去掉e再加-ly。
如：true-truly; due-duly绝大多数辅音字母加e结尾的形容词直接加 -ly如：polite-politely; wide-widely; wise-wisely; nice-nicely 3. 以“y”结尾的，且读音为 / i /， 先将“y”改成“i”，再加“ly”，如：happy-happily; heavy-heavily; angry-angrily; busy-busily但是如果读音为 / ai /， 直接加ly，如：dry-dryly; sly-slyly; shy---shyly4.以ic 结尾的词，加ally，如：economic-economically; basic-basically; scientific-scientifically; automatic-automatically; energetic-energetically; 但是public-publicly 例外 5.以 e 结尾的形容词一般+ly但是：1） 以ble , ple, tle结尾时,去e加y，如：simple-simply; considerable-considerably; terrible-terribly gentle-gently; possible-possibly; probable-probably; incredible-incredibly2）whole-wholly；true----truly。
三 动词第三人称单数变化规则1、大多数动词在词尾加“S”在清辅音后发音为[s]，在浊辅音及元音后发音为 [z]如： ①stop－stops [s] ; make－makes [s] ②read－reads [z] ; play－plays [z]2、以辅音字母加“y”结尾的，要先将“y”变为“i”，然后在加“es”读[iz] 如： fly－flies [z]； carry－carries [z] study－studies [z]; worry－worries3、以“s, x, ch, sh”结尾的，在词尾加“es”，发音为[iz] 如： teach－teaches [iz]; watch－watches [iz]4、以“o”结尾的动词，加“es”，读[z] 如： go－goes [z] do－does [z]下面几个动词变为单数时，原词的元音部分的发音发生了较大的变化，请注意记忆 如：1、do [du:]－does [dz]2、say [sei]－says [sez]以不发音字母“e”结尾的开音节词，如果尾音是[s]，[z]时，加“s”后字母“e”发音， 与所加“s”一起读做[iz]。
如： close－closes [iz] be动词包括：am， is， are第三人称单数用 is；过去式为 was；复数用are，过去式为were.四 动词过去式变化规则及其读音规则 1.一般情况下，动词词尾加 -ed ，如： work ---worked play---played wanted----wanted act----acted 2、以不发音的 -e 结尾动词，动词词尾加 -d，如： live---lived move----moved taste---tasted hope---hoped 3、以辅音字母 + y结尾的动词，把-y变为-i 再加-ed，如： study---studied copy---copied cry---cried carry---carried 4、以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed，实际是辅音元音加辅音的结构，如： stop ---stopped 5、不规则动词的过去式变化规律性不强，须多加记忆 go – went make – made get – got buy - bought come – came fly-flew五 动词过去分词变化规则与不规则变化（一）变化规则：与过去式规则相同。
1. 一般直接在词尾加上edlook---looked----looked 2. 以e结尾的动词，直接加dmove---moved----moved 3. 以y结尾，y前面是辅音字母的动词，变y 为i，再加edcarry---carried-----carried 4. 部分动词需双写尾字母，加edstop----stopped----stopped（二）不规则变化： 不规则动词的变化因词而异但如对不规则动词的过去式和过去分词做一分析，就可发现其中的“规则”为方便同学们记忆，现将部分不规则动词的原形、过去式和过去分词列出并规为五种类型以便准确记忆 AAB型原形过去式过去分词现分/动名词三单中文beatbeatbeatenbeatingbeats打败 ABC 型原形过去式过去分词现分/动名词三单中文bewas / werebeenbeingis / am是，在…beginbeganbegunbeginningbegins开始blowblewblownblowingblows吹breakbrokebrokenbreakingbreaks破裂、折断choosechosechosenchoosingchooses选择dodiddonedoingdoes做、干drawdrewdrawndrawingdraws画画drivedrovedrivendrivingdrives驾驶drinkdrankdrunkdrinkingdrinks喝eatateeateneatingeats吃fallfellfallenfallingfalls落下flyflewflownflyingflies飞forgetforgotforgottenforgettingforgets忘记getgotgottengettinggets到达、得到givegavegivengivinggives给gowentgonegoinggoes去growgrewgrowngrowinggrows成长hidehidhiddenhidinghides隐藏knowknewknownknowingknows知道了解mistakemistookmistakenmistakingmistakes犯错rideroderiddenridingrides骑ringrangrungringingrings响铃riseroserisenrisingrises升起seesawseenseeingsees看到shakeshookshakenshakingshakes摇动singsangsungsingingsings唱speakspokespokenspeakingspeaks讲stealstolestolenstealingsteals偷swimswamswumswimmingswims游泳taketooktakentakingtakes拿、带throwthrewthrownthrowingthrows扔wakewokewokenwakingwakes唤醒wearworewornwearingwears穿戴writewrotewrittenwritingwrites写 AAA型原形过去式过去分词现分/动名词三单中文costcostcostcostingcosts花费cutcutcutcuttingcuts砍、切、割hithithithittinghits打、撞hurthurthurthurtinghurts伤害letletletlettinglets让putputputputtingputs放置readreadreadreadingreads读setsetsetsettingsets设置、搭建shutshutshutshuttingshuts关闭 ABA型原形过去式过去分词现分/动名词三单中文becomebecamebecomebecomingbecomes成为comecamecomecomingcomes来overcomeovercameovercomeovercomingovercomes克服runranrunrunningruns跑 ABB型原形过去式过去分词现分/动名词三单中文understandunderstoodunderstoodunderstandingunderstands理解、bringbroughtbroughtbringingbrings带来buildbuiltbuiltbuildi。