BOAST - PRESENT SIMPLE
★ i boast
★ you boast
★ he/she/it boasts
★ we boast
★ you boast
★ they boast
BOAST - PRESENT CONTINUOUS
★ i am boasting
★ you are boasting
★ he/she/it is boasting
★ we are boasting
★you are boasting
★ they are boasting
BOAST - PRESENT PERFECT
★ i have boasted
★ you have boasted
★ he/she/it has boasted
★ we have boasted
★ you have boasted
★ they have boasted
The Simple Past Tense, also called Simple Past or Preterite is a verb tense that is used to describe completed action happend 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 is a tense used to express the activity that started in the past and is still going on in the present tense. In British English this is the most used tense of them all. When you want to tell about your experience up to the present, you use Present Perfect. The prepositions that are often used with this tense are NEVER, EVER, JUST, ALREADY, YET and many others.
BOAST - PRESENT PERFECT CONTINUOUS
★ i have been boasting
★ you have been boasting
★ he/she/it has been boasting
★ we have been boasting
★ you have been boasting
★ they have been boasting
BOAST - PAST SIMPLE
★ i boasted
★ you boasted
★ he/she/it boasted
★ we boasted
★ you boasted
★ they boasted
BOAST - PAST CONTINUOUS
★ i was boasting
★ you were boasting
★ he/she/it was boasting
★ we were boasting
★ you were boasting
★ they were boasting
BOAST - PAST PERFECT
★ i had boasted
★ you had boasted
★ he/she/it had boasted
★ we had boasted
★ you had boasted
★ they had boasted
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
BOAST - PAST PERFECT CONTINUOUS
★ i had been boasting
★ you had been boasting
★ he/she/it had been boasting
★ we had been boasting
★ you had been boasting
★ they had been boasting
BOAST - FUTURE SIMPLE
★ i will boast
★ you will boast
★ he/she/it will boast
★ we will boast
★ you will boast
★ they will boast
BOAST - FUTURE CONTINUOUS
★ i will be boasting
★ you will be boasting
★ he/she/it will be boasting
★ we will be boasting
★ you will be boasting
★ they will be boasting
BOAST - FUTURE PERFECT
★ i will have boasted
★ you will have boasted
★ he/she/it will have boasted
★ we will have boasted
★ you will have boasted
★ they will have boasted
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.
BOAST - FUTURE PERFECT CONTINUOUS
★ i will have been boasting
★ you will have been boasting
★ he/she/it will have been boasting
★ we will have been boasting
★ you will have been boasting
★ they will have been boasting

Conjugation of verb Boast