一．名词变形容词：
1．名词后加-y,如：
luck→lucky,cloud→cloudy;wind→windy;rain→rainy;
sun→sunny,snow→snowynoise-noisyhealth→healthy
2．在名词后加-ly,如：
friend→friendlylove→lovelyday→daily
3．方位名词加-ern，如：
east→easternwest→western
south→southernnorth→northern
二．动词变形容词
1.词尾加ful:
use-useful,care-careful,help-helpful,
thank-thankfulpeace-peaceful,
forget-forgetful,play-playful,
succeed-successful,wonder-wonderful
2.词尾加d或ed:
please-pleased,unite-united,excite-excited,
surprise-surprised,organize-organized,close-closed,
wound-wounded,relax-relaxed,develop-developed,
appreciate-appreciated,frustrate-frustrated,
interest-interested,annoy-annoyed,use-used,
frighten-frightened,crowd-crowded,thrill-thrilled,
pollute-polluted
3.词尾加ing:
interest-interesting,
surprise-surprising,
excite-exciting
develop-developing,
frighten-frightening,
thrill-thyrilling
frustrate-frustrating,
relax_relaxing,
live-living
rock-rocking,
sleep-sleeping
4.词尾变y为i,加ed:
worry-worried,marry-married,fry-fried,terrify-terrifiedsatisfy-satisfied
5.词尾加able:
know-knowledgeable,enjoy-enjoyabe,suit-suitable，adjust-adjustable,comfort-comfortable
6.其它：
lose-lost,fool-foolish,live-lively
sleep-sleepy/sleeping/asleep,wake-awake,taste-tasty
speak-spoken,break-broken,die-dead,educate-aducational,
world-worldwide
三．形容词变副词规律小结
例词
1.大部分形容词加ly
careless----carelessly
quiet----quietly
different----differently
2.以le结尾的形容词变le为ly
possible----possibly
terrible----terribly
comfortable----comfortably
gentle----gently
simple----simply
3.以y结尾的形容词
变y为ily
easy----easily
angry----angrily
noise的形容词noisy----noisily
happy----happily
heavy----heavily
healthy----healthily
不规则变化
本身既是形容词也是副词，无需改变
fast----fast
early----early
high----high
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