1．容易错写词尾的单词
  (1) 是ar不是er : 

grammar, vinegar, regular, popular, dollar, beggar, sugar, particular 

  (2)是 or 不是er: 

professor, visitor, translator, director, editor, educator, actor, inventor, competitor

 2．容易颠倒字母顺序的单词（括号中为错词）
 destroy (destory) , first (frist) , Friday (Firday) friend (firend) ,receive (recieve) , true (ture),amateur (amature)

3．容易丢掉一个字母的单词
 （1）容易丢掉字母n：government，environment，environmental
 （2）容易丢掉不发音的字母：Christmas，Wednesday
 （3）拼写比较特别的单词：committee，guarantee，dilemma，opportunity，bridegroom，spokesman，succeed，competition，February

4．容易多一个字母的单词（括号中为错词）
 develop (develope) , habit (habbit) , proud (pround) ,modern (mordern) , until (untill) , souvenir (souvenire) ,similar (similiar)

 5．词形相近，词义、词性容易混淆的单词
quiet一quite, aboard一abroad, broad一board, adopt一adapt, alone一along, horse一house, except一expect ,through一thorough, price一prize一praise, quality一quantity, it一it's, everyday一 every day, beside-besides, affect一 effect , typewriter-typist, cook-cooker, physicist一 physician, late一later,  latter一lately, seize一size , sweet一sweat, till一until , sigh一sign, weather一whether, rise一raise, piece一peace, rough一tough, steel一steal一still, sometime一sometimes一some time一sometimes, past一passed, wander一wonder, father一farther一feather, diary一dairy, form一from, hard一hardly, metal一medal一mental, than一then, principle一principal ,enable一unable, overcome一come over, altitude一attitude

6．该双写却没有双写的单词
    unforgettable, beginning, written , inferred, referred , occurred

7．不该双写却双写的单词（括号中为错词）
   writing (writting) , eaten (eatten) , suffer (sufferred)

8．必须去掉字母e的单词
  unbelievable, valuable, argument, truly

9．不能去掉字母e的单词
   (un) changeable,  (re) chargeable, hopeful, envelope，moveable

10．两个变化非常特别的单词
     panic-panicked-panicking

     picnic-picnicked-picnicking 

  二、词性转化易错词

1．动词变名词比较特殊的单词

describe 一 description,  explain一 explanation, pronounce一 pronunciation, permit一permission, conclude一conclusion, admit一admission, prepare一preparation , decide—decision, conclude一conclusion，arrive一arrival, survive一survival-survivor

2．名词变形容词比较特殊的单词

     nature一natural, benefit一 beneficial

3．形容词变名词比较特殊的单词

    curious-curiosity, able-ability, dangerous一 danger, anxious-anxiety, broad-breadth, long-length, wide/width, deep-depth, responsible-responsibility

4．形容词变副词不去e的单词

     (un) fortunate 一（un) fortunately, immediate一immediately, absolute一absolutely, rude一rudely, approximate一approximately, desperate一desperately, large一largely, accurate一accurately

    但true-truly !

5．形容词与副词同形的单词

   straight，fast，late，hard

6．形容词变副词，去e加y的单词（以-ble，pIe结尾的单词，去e加y就好）

    simple一simply,（im）possible一（im）possibly， probable一probably，（un）comfortable一（un）comfortably

7．基数词转化为序数词比较特殊的单词

     one一 first, two一 second, three一third, five一fifth, eight一eighth, nine一ninth, twelve一twelfth

    整数位的一ty要改为一tieth，如twenty一twentieth, sixty一sixtieth

    另外，注意这些数词的变化：four一fourteen一forty , five一fifteen一fifty