Hacer + Haber Verb conjugations - GCSE Spanish

(AQA)

'hacer' and 'haber' are irregular verbs.

Haber is used most frequently as an auxiliary verb to form the perfect tenses. It also has two other uses: In the third-person present indicative form of hay, it can mean "there is" or "there are." It is also used in the phrase hay que, meaning "it is necessary." With those meanings, haber also can be used in the other third-person tenses.