否定式的常见缩写形式

否定式的常见缩写形式
 
系动词be、助动词、情态动词的否定形式一般可以缩写成为一种简略的形式。如：
is not—isn’t                                are not—aren’thttp://yingyu.chazidian.com
was not—wasn’t                         were not—weren’t
has not—hasn’t                           have not—haven’t
will not—won’t                           would not—wouldn’t
shall not—shan’t                         should not—shouldn’t
do not—don’t                              did not—didn’t
ought not—oughtn’t                     dare not—daren’t
used not to—usedn’t / didn’t use to