«have» como verbo auxiliar: forma y uso en la formación de tiempos

1. Forma

Partes principales: «have,» «had,» «had»

Gerundio/participio de presente: «having»

Tiempo presente:

Afirmativa: I have / I’ve; you have / you’ve; he has / he’s; she has / she’s; it has / it’s; we have/we’ve; you have / you’ve; they have / they’ve.

Negativa: I have not / I’ve not / I haven’t; you have not / you’ve not / you haven’t; he has not / he’s not / he hasn’t; we have not / we’ve not / we haven’t; you have not / you’vew not / you haven’t; they have not / they’ve not / they haven’t.

Interrogativa: have I?; have you?; has he?; has she?; has it? have we? have you? have they?

Contracciones negativas alternativas (solo con tiempos de perfecto): I have not / I’ve not / I haven’t; you have not / you’ve not / you haven’t; he has not / he’s not / he hasn’t etc.

Interrogativa negativa: have I not ? / haven’t I?; have not you? / haven’t you?; has not he / hasn’t he?

Tiempo pasado:

Afirmativa: «had» /» ‘d ,» para todas las personas

Negativa: «had not» / «hadn’t,» para todas las personas.

Interrogativa: had I? etc.

Interrogativa negativa: «had I not?» / «hadn’t I»? etc.

Los otros tiempos siguen las normas que se aplican a los verbos ordinarios.

2. Uso para formar tiempos:

• PRETERITO PERFECTO («PRESENT PERFECT»): I have worked.
• PRETERITO PLUSCUAMPERFECTO («PAST PERFECT»): I had worked.
• FUTURO PERFECTO («FUTURE PERFECT»): I will have worked / I shall have worked.
• CONDICIONAL PERFECTO («PERFECT CONDITIONAL»): I would have worked / I should have worked.