Present Perfect Negative

The present perfect simple expresses an action that is still going on or that stopped recently, but has an influence on the present. It puts emphasis on the result.

Form of Present Perfect

Subject	Positive Form	Negative Form
I – you – we – they	They have eaten	They have not eaten
He – she – it	She has eaten	She has not eaten

Present Perfect Negative Formula

Subject + have + not /has + not + verb in participle + complement

Exceptions in Spelling when Adding ‘ed’

Exceptions in spelling when adding -ed	Example
After a final e only add –d	Love – loved
Final consonant after a short, stressed vowel or l as final consonant after a doubled vowel	Admit – admitted
	Travel – travelled
Final y after a consonant becomes i	Hurry - hurried