The clauses above bear examples of a common verb tense: the present perfect continuous. This is the tense that indicates an action ...

Has aprendido el pretérito perfecto. 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 called a helping verb ...

not yet 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 called a helping verb, is a verb that is used with ...