double, doubles, doubled, daubling

DOUBLE - PRESENT SIMPLE
★ i double
★ you double
★ he/she/it doubles
★ we double
★ you double
★ they double
DOUBLE - PRESENT CONTINUOUS
★ i am doubling
★ you are doubling
★ he/she/it is doubling
★ we are doubling
★you are doubling
★ they are doubling
DOUBLE - PRESENT PERFECT
★ i have doubled
★ you have doubled
★ he/she/it has doubled
★ we have doubled
★ you have doubled
★ they have doubled
The Simple Past Tense, also called Simple Past or Preterite is a verb tense that is used to describe completed action happened in the past. It is the most basic form of past tense and it is formed by adding d, ed or ied to the base structure of the verb.
Present Perfect Continuous is a tense in the English language used to emphasize that one action is still continuing in the present moment. The difference between Present Perfect and Present Perfect Continuous is that Present Perfect is emphasizing the action of the sentence while Present Perfect Continuous is emphasizing the duration of that action.
DOUBLE - PRESENT PERFECT CONTINUOUS
★ i have been doubling
★ you have been doubling
★ he/she/it has been doubling
★ we have been doubling
★ you have been doubling
★ they have been doubling
DOUBLE - PAST SIMPLE
★ i doubled
★ you doubled
★ he/she/it doubled
★ we doubled
★ you doubled
★ they doubled
DOUBLE - PAST CONTINUOUS
★ i was doubling
★ you were doubling
★ he/she/it was doubling
★ we were doubling
★ you were doubling
★ they were doubling
DOUBLE - PAST PERFECT
★ i had doubled
★ you had doubled
★ he/she/it had doubled
★ we had doubled
★ you had doubled
★ they had doubled
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
DOUBLE - PAST PERFECT CONTINUOUS
★ i had been doubling
★ you had been doubling
★ he/she/it had been doubling
★ we had been doubling
★ you had been doubling
★ they had been doubling
DOUBLE - FUTURE SIMPLE
★ i will double
★ you will double
★ he/she/it will double
★ we will double
★ you will double
★ they will double
DOUBLE - FUTURE CONTINUOUS
★ i will be doubling
★ you will be doubling
★ he/she/it will be doubling
★ we will be doubling
★ you will be doubling
★ they will be doubling
DOUBLE - FUTURE PERFECT
★ i will have doubled
★ you will have doubled
★ he/she/it will have doubled
★ we will have doubled
★ you will have doubled
★ they will have doubled
Present Perfect Continuous is a tense in the English language used to emphasize that one action is still continuing in the present moment. The difference between Present Perfect and Present Perfect Continuous is that Present Perfect is emphasizing the action of the sentence while Present Perfect Continuous is emphasizing the duration of that action.
DOUBLE - FUTURE PERFECT CONTINUOUS
★ i will have been doubling
★ you will have been doubling
★ he/she/it will have been doubling
★ we will have been doubling
★ you will have been doubling
★ they will have been doubling

conjugation of verb double