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→westernsouth→southernnorth→northern

形容词变副词：

1．一般形容词词尾加-ly变成副词，如：

slow→slowlyclear→clearlyquick→quickly

quiet→quietlycareful→carefullysudden→suddenly

real→reallypolite→politelysafe→safelywide→widely

2．以“辅音字母+y”结尾的，要变y为i加-ly，如：

easy→easilyhappy→happilyheavy→heavily

lucky→luckilybusy→busilyangry→angrily;

3．以元音字母＋e结尾，去e加-ly，如：

true→truly

4．以辅音字母加-le结尾，去e加-y，如：

terrible→terriblypossible→possibly

5．形容词与副词同形，如：

fast→fastearly→earlyhigh→highhard→hard