词类转换（3）

Nat

3、形容词——》名词


（1）以ble结尾改成bility
例：able->abiility ; resposible->resposibility ; possible->possibility ;
      flexible->flexibility ;

（2）结尾加ness
例：weak->weakness ; kind->kindness ; ill->illness ;
      sad->sadness ; tired->tiredness
注意：happy->happiness ;

（3）结尾加th
例：warm->warmth ;
注意：strong->strenth ; long->length ; wide->width ;
          true->truth ; young->youth ;

（4）以ate结尾改成acy
例：accurate->accuracy ; private->privacy ; adequate->adequacy ;

（5）其他
例：free->freedom ; wise->wisdom ; cruel->cruelty ;
      safe->safety ; trouble->troublesome ; history->historical,historic ;
      science->scientific ; brave->bravery ; short->shortly,shortage,shortness ;