英语中的缩略形式主要是人称代词的主格形式（I / you / he / she / it / we / you / they）和疑问词（what / where/ who）与系动词（am/is/are）、助动词（has/had/will/would），系动词、助动词和情态动词与not等词缩略而成。
缩写形式主要有以下几种形式：
1、人称代词主格与系动词的缩写：
❶I'm = I am我是
❷we're = we are我们是
❸you're = you are你（们）是
❹she's = she is/was她是
❺he's = he is/was他是
❻it's = it is/was它是
❼they're = they are他（她，它）们是
2、否定句中系动词与not的缩写：
❶isn't = is not不是
❷aren't = are not不是
❸wasn't = was not不是
❹weren't = were not不是
3、人称代词主格与shall/will，not的缩写：
❶I'll = I will/shall我将要
❷we'll = we will我们将要
❸you'll = you will你（们）将要
❹she'll = she will她将要
❺he'll = he will他将要
❻it'll = it will它将要
❼they'll = they will他（她，它）们将要
❽won't = will not不会（要）
❾shan't= shall not不会（要）
有不少同学不知道won't，shan't，一定要记住哦！
4、人称代词主格与have/has，not的缩写：
❶I've = I have我有
❷we've = we have我们有
❸you've = you have你（们）有
❹she's = she has她有
❺it's = it has它有
❻he's = he has他有
❼they've = they have他们有
❽haven't = have not没有
❾hasn't = has not没有
5、与疑问词等其它词的缩写：
1) what's = what is是什么
2) what're = what are是什么
3) who's = who is是谁
4) who're = who are是谁
5) where's = where is在哪儿
6) where're = where are在哪儿
7) there's = there is有
8) there're = there are有
9) doesn't = does not不做
10) don't = do not不做
11) can't = can not不能
12) couldn't = could not不能
13) that's = that is那是
14) let's = let us让我们
15) my name's = my name is我的名字叫
16) I'd = I would/should/had我愿／已
17) You'd = you would/should/had你（们）愿／已
18) We'd = We would/should/had我们愿／已
19) You'd better = you had better你（们）最好
使用缩写形式时应注意以下几点：
1、this is没有缩略形式。
2、第三人称单数与“＇s”的缩写中，＂＇s"可以表示三个词：is，was，has。如：she is, she was，she has的缩写形式都是she's。同学们在使用时一定要根据时态和语境具体情况具体分析，做到心中有数，不能想当然的认为是＂＇s"就是is。
3、对一般疑问句进行简单回答时，肯定形式不能用缩略形式。