ADD - PRESENT SIMPLE
★ i add
★ you add
★ he/she/it adds
★ we add
★ you add
★ they add
ADD - PRESENT CONTINUOUS
★ i am adding
★ you are adding
★ he/she/it is adding
★ we are adding
★you are adding
★ they are adding
ADD - PRESENT PERFECT
★ i have added
★ you have added
★ he/she/it has added
★ we have added
★ you have added
★ they have added
A transitive verb always has a noun that  receives the action of the verb, called the direct object.
An intransitive verb never has a direct or indirect object. Although an intransitive verb may be followed by an adverb or adverbial phrase, there is no object to receive its action
ADD - PRESENT PERFECT CONTINUOUS
★ i have been adding
★ you have been adding
★ he/she/it has been adding
★ we have been adding
★ you have been adding
★ they have been adding
ADD - PAST SIMPLE
★ i added
★ you added
★ he/she/it added
★ we added
★ you added
★ they added
ADD - PAST CONTINUOUS
★ i was adding
★ you were adding
★ he/she/it was adding
★ we were adding
★ you were adding
★ they were adding
ADD - PAST PERFECT
★ i had added
★ you had added
★ he/she/it had added
★ we had added
★ you had added
★ they had added
ADD - PAST PERFECT CONTINUOUS
★ i had been adding
★ you had been adding
★ he/she/it had been adding
★ we had been adding
★ you had been adding
★ they had been adding
ADD - FUTURE SIMPLE
★ i will add
★ you will add
★ he/she/it will add
★ we will add
★ you will add
★ they will add
ADD - FUTURE CONTINUOUS
★ i wil be adding
★ you will be adding
★ he/she/it will be adding
★ we will be adding
★ you will be adding
★ they will be adding
ADD - FUTURE PERFECT
★ i will have added
★ you will have added
★ he/she/it will have added
★ we will have added
★ you will have added
★ they will have added
ADD - FUTURE PERFECT CONTINUOUS
★ i will have been adding
★ you will have been adding
★ he/she/it will have been adding
★ we will have been adding
★ you will have been adding
★ they will have been adding

conjugation of verb Add