助动词的缩写

下面列举几种助动词的缩写：

1.一般现在时的助动词和not的缩写：don't,  doesn't, wouldn't

2.一般将来时助动词和not的缩写：won't,  shan't

3.一般过去时助动词和not的缩写：didn't

4.现在完成时助动词和not的缩写：haven't,  hasn't

5.过去完成时助动词和not的缩写：hadn't