Tenses

Present indefinite
Positive:
Subject:	He, She, It
Formula:	Sub. + Verb (I form) + s / es + Obj.
Example:	When ‘s’ is used with Verb.
	He writes a letter. She writes a letter. It looks beautiful.
	When ‘es’ is used with Verb.
	He goes to school. She goes to school.
Subject:	I, We, They, You
Formula:	Sub. + Verb (I form) + Obj.
Example:	I write a letter. We write a letter. They write a letter. You write a letter.

                                   

Negative:
Subject:	He, She, It
Formula:	Sub. + does not + Verb (I form)  + Obj.
Example:	He does not write a letter. She does not write a letter. It does not look beautiful.
Subject:	I, We, They, You
Formula:	Sub. + do not + Verb (I form) + Obj.
Example:	I do not write a letter. We do not write a letter. They do not write a letter. You do not write a letter.

Single Interrogative:
Subject:	He, She, It
Formula:	Does + Sub. + Verb (I form)  + Obj.
Example:	Does he write a letter? Does she write a letter? Does it look beautiful?
Subject:	I, We, They, You
Formula:	Do + Sub. + Verb (I form) + Obj.
Example:	Do I write a letter? Do we write a letter? Do they write a letter? Do you write a letter?

Single Interrogative + Negative:
Subject:	He, She, It
Formula:	Does + Sub. + not + Verb (I form)  + Obj.
Example:	Does he not write a letter? Does she not write a letter? Does it not look beautiful?
Subject:	I, We, They, You
Formula:	Do + Sub. + not + Verb (I form) + Obj.
Example:	Do I not write a letter? Do we not write a letter? Do they not write a letter? Do you not write a letter?

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Double Interrogative:
Subject:	He, She, It
Formula:	W’s + Does + Sub. + Verb (I form)  + Obj.
Example:	Why does he write a letter? Why does she write a letter? Why does it look beautiful?
Subject:	I, We, They, You
Formula:	W's + Do + Sub. + Verb (I form) + Obj.
Example:	Why do I write a letter? Why do we write a letter? Why do they write a letter? Why do you write a letter?

Double Interrogative + Negative:
Subject:	He, She, It
Formula:	W’s + Does + Sub. + not + Verb (I form)  + Obj.
Example:	Why does he not write a letter? Why does she not write a letter? Why does it not look beautiful?
Subject:	I, We, They, You
Formula:	W’s + Do + Sub. + not + Verb (I form) + Obj.
Example:	Why do I not write a letter? Why do we not write a letter? Why do they not write a letter? Why do you not write a letter?

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