BOIL - PRESENT SIMPLE
★ i boil
★ you boil
★ he/she/it boils
★ we boil
★ you boil
★ they boil
BOIL - PRESENT CONTINUOUS
★ i am boiling
★ you are boiling
★ he/she/it is boiling
★ we are boiling
★you are boiling
★ they are boiling
BOIL - PRESENT PERFECT
★ i have boiled
★ you have boiled
★ he/she/it has boiled
★ we have boiled
★ you have boiled
★ they have boiled
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.
BOIL - PRESENT PERFECT CONTINUOUS
★ i have been boiling
★ you have been boiling
★ he/she/it has been boiling
★ we have been boiling
★ you have been boiling
★ they have been boiling
BOIL - PAST SIMPLE
★ i boiled
★ you boiled
★ he/she/it boiled
★ we boiled
★ you boiled
★ they boiled
BOIL - PAST CONTINUOUS
★ i was boiling
★ you were boiling
★ he/she/it was boiling
★ we were boiling
★ you were boiling
★ they were boiling
BOIL - PAST PERFECT
★ i had boiled
★ you had boiled
★ he/she/it had boiled
★ we had boiled
★ you had boiled
★ they had boiled
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
BOIL - PAST PERFECT CONTINUOUS
★ i had been boiling
★ you had been boiling
★ he/she/it had been boiling
★ we had been boiling
★ you had been boiling
★ they had been boiling
BOIL - FUTURE SIMPLE
★ i will boil
★ you will boil
★ he/she/it will boil
★ we will boil
★ you will boil
★ they will boil
BOIL - FUTURE CONTINUOUS
★ i will be boiling
★ you will be boiling
★ he/she/it will be boiling
★ we will be boiling
★ you will be boiling
★ they will be boiling
BOIL - FUTURE PERFECT
★ i will have boiled
★ you will have boiled
★ he/she/it will have boiled
★ we will have boiled
★ you will have boiled
★ they will have boiled
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.
BOIL - FUTURE PERFECT CONTINUOUS
★ i will have been boiling
★ you will have been boiling
★ he/she/it will have been boiling
★ we will have been boiling
★ you will have been boiling
★ they will have been boiling

Conjugation of verb Boil