Some past participles are irregular. For example ... The first part of the perfect tense is the present tense of the verb haber, which is known as an auxiliary verb. An auxiliary verb, also ...

one sees/we see Practise what you've learned about irregular verbs in the present tense with this quiz. The verbs connaître (to know, be familiar with) and écrire (to write) should be learned in ...

A regular verb is one that conforms to the rules of grammar, whereas an irregular verb is one that does not ... In English we have many different verb tenses, but the most common one you will use ...