Present Tense - Affirmative

I am (I'm) - yo soy, yo

                  estoy

you are (you're) -

                     tú eres, tú estás

                     usted es, usted

                     está

                    ustedes son,

                    ustedes están

he is (he's) - él es, él está

she is (she's) - ella es, ella está

it is (it's) - es, está

we are (we're) -

                    nosotros somos,

                    nosotros estamos

they are (they're) - ellos son,

                              ellos están

Interrogative: Am I? Are you? Is he? Is she? Is it? Are we? Are they?

Past Tense - Affirmative

I was - yo era, yo estaba

you were - tú eras, tú

                  estabas,

                  usted era, usted

                  estaba

                  Uds. eran, Uds.

                   estaban

he was - él era, él estaba

she was - ella era, ella

                  estaba

it was - era, estaba

we were - nosotros

                 éramos,

                 nosotros

                    estábamos

they were - ellos eran,

                      ellos estaban

Interrogative: Was I? Were you? Was he? Was she? Was it? Were we? Were they?

Present Perfect Tense

I have been (I've been) -

                        yo he sido, yo he

                         estado

you have been (you've been) -

                         tú has sido, tú has

                         estado,

                          Ud. ha sido, Ud. ha

                          estado,

                          Uds. han sido, Uds.

                          han estado

he has been (he's been) -

                         él ha sido, él ha

                         estado

she has been (she's been) - ella ha sido, ella ha

                             estado

it has been (it's been) -

                             ha sido, ha estado

we have been (we've been) -

                             nosotros hemos

                              sido,

                              nosotros hemos

                              estado

they have been (they've been) -

                              ellos han sido,

                              ellos han estado

Interrogative: Have I been? Have you been? Has he been? Has she been? Has it been? Have we been? Have they been?

How have you been?

¿Cómo has estado?

Where have you been?

¿Dónde has estado?

Present Tense -

Negative

I'm not

you're not, you aren't

he's not, he isn't

she's not, she isn't

it's not, it isn't

we're not, we aren't

they're not, they aren't

Interrogative: Am I not? Aren't you? Isn't he? Isn't she? Isn't it? Aren't we? Aren't They?

Past Tense - Negative

I wasn't

you weren't

he wasn't

she wasn't

it wasn't

we weren't

they weren't

Interrogative: Wasn't I? Weren't you? Wasn't he? Wasn't she? Wasn't it? Weren't we? Weren't they?

Present Perfect Tense - Negative

I haven't been

you haven't been

he hasn't been

she hasn't been

it hasn't been

we haven't been

they haven't been

Interrogative: Haven't I been?Haven't you been? Hasn't he been? Hasn't she been? Hasn't it been? Haven't we been? Haven't They been?

Para decir ¿Conoces San Diego?

decimos en inglés, "Have you been to San Diego?"