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รูปแบบการเขียนย่อShort Forms (Contracted Forms) in English

 English Grammar
Short Forms (Contracted Forms) in English
The long and the short of it
Verb conjugation and contraction - in other words; "The short form".
In spoken English we use the short form a lot. We say things like: I'm / you're / didn't etc. instead of I am / you are / did not etc.
We also use these short forms in informal written English. When we write in the short form, we use an apostrophe (') for the missing letter(s).
Forms of the auxiliary verbs to be, to do and to have:-
To be - Simple Present Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I am
I'm
I am not
I'm not
He is
He's
He is not
He isn't or He's not
She is
She's
She is not
She isn't or She's not
It is
It's
It is not
It isn't or It's not
You are
You're
You are not
You aren't or You're not
We are
We're
We are not
We aren't or We're not
They are
They're
They are not
They're not
To be - Simple Past Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I was
---
I was not
I wasn't
He was
He was not
He wasn't
She was
She was not
She wasn't
It was
It was not
It wasn't
You were
You were not
You weren't
We were
We were not
We weren't
They were
They were not
They weren't
To do - Simple Present Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I do
---
I do not
I don't
He does
He does not
He doesn't
She does
She does not
She doesn't
It does
It does not
It doesn't
You do
You do not
You don't
We do
We do not
We don't
They do
They do not
They don't
To do - Simple Past Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they did
---
I / he / she / it / you / we / they did not
I / he / she / it / you / we / they didn't
To have - Simple Present Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I have
I've
I have not
I haven't or I've not
He has
He's
He has not
He hasn't or He's not
She has
She's
She has not
She hasn't or She's not
It has
It's
It has not
It hasn't or It's not
You have
You've
You have not
You haven't or You've not
We have
We've
We have not
We haven't or We've not
They have
They've
They have not
They haven't or They've not
To have - Simple Past Form
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they had
I'd
he'd
she'd
it'd
you'd
we'd
they'd
I / he / she / it / you / we / they had not
I hadn't or I'd not
he hadn't or he'd not
she hadn't or she'd not
it hadn't or it'd not
you hadn't or you'd not
we hadn't or we'd not
they hadn't or they'd not

The long and short forms of the modal verbs can, could, shall, should, must, will and would
Can
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they can
---
I / he / she/ it / you / we / they cannot
I / he / she / it / you / we / they can't
Could
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they could
---
I / he / she/ it / you / we / they could not
I / he / she / it / you / we / they couldn't
Must
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they must
---
I / he / she/ it / you / we / they must not
I / he / she / it / you / we / they mustn't
Shall
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they shall
---
I / he / she/ it / you / we / they shall not
I / he / she / it / you / we / they shan't
Should
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they should
---
I / he / she / it / you / we / they should not
I / he / she / it / you / we / they shouldn't
Will
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they will
I'll
He'll
She'll
It'll
You'll
We'll
They'll
I / he / she / it / you / we / they will not
I won't or I'll not
He won't or He'll not
She won't or She'll not
It won't or It'll not
You won't or You'll not
We won't or We'll not
They won't or They'll not
Would
Positive Statement
Negative Statement
Long form
Short form
Long form
Short form
I / he / she / it / you / we / they would
I'd
He'd
She'd
It'd*
You'd
We'd
They'd
I / he / she / it / you / we / they would not
I wouldn't or I'd not
He wouldn't or He'd not
She wouldn't or She'd not
It wouldn't or It'd not*
You wouldn't or You'd not
We wouldn't or We'd not
They wouldn't or They'd not
* Not "good" English, but you will hear occasionally.
The imperative
Let Us
Let us is a funny one. The only time I've ever heard the long form of "Let us..." used is when the vicar used to say "Let us pray." It's much more likely you'll hear or see the contracted form "let's". "Let's do this," no "Let's do that instead," and the sarcastic "Oh yes, let's."
Note: Do you = D'you(American)
Positive Statement
Negative Statement
Long form - rarely used
Short form
Long form - used by pompous people
Short form
Let us
Let's
Let us not
Let's not