WOULD

'Would' es el pasado de will en algunos casos y verbo auxiliar en otros. Convierte en potencial al verbo que le sigue y va seguido del verbo en forma base.

I would go - iría 

I would eat - comería

I would be - sería / estaría 

I would have - tendría / habría 

Affirmative

• I would go to the party.
  Yo iría a la fiesta.
• You would feel better.
  Te sentirías mejor.
• That would be great.
  Eso sería genial.
• We would help you.
  Nosotros te ayudaríamos.
• Joan would start to cry.
  Joan comenzaría a llorar.
• Glenn would come right away.
  Glenn vendría enseguida.
• They would get very angry.
  Ellos se enojarían mucho.

• Negative

  • She would not be happy.
    Ella no sería feliz.
  • We wouldn't spend all the money.
    No gastaríamos todo el dinero.
  • I wouldn't do that.
    Yo no haría eso.

  Interrogative

  • Would he give Patty a diamond ring?
    ¿Él le daría a Patty un anillo de diamantes?
  • Would you mind?
    ¿Te importaría?

  Would + have

• I would have picked you up.
  Yo te habría pasado a buscar.
• We wouldn't have had enough time.
  No habríamos tenido tiempo suficiente.
• Matt would have said he was sorry.
  Matt habría dicho que lo lamentaba.

FIRST CONDITIONAL

Se forma con if + simple present + simple future.

 Se emplea cuando una situación es real o posible: If it rains today, I'll stay at home. .

If clause	Main clause
If + Present tense	will / can / may / must + verb
If it rains today,	I'll stay at home

• If it rains today, I'll stay at home.
  Si llueve hoy, me quedaré en casa.
• If he is busy now, I will come back tomorrow.
  Si está ocupado ahora, regresaré mañana.
• If I have time, I'll visit my parents this afternoon.
  Si tengo tiempo, visitaré a mis padres esta tarde.
• If it is warm tomorrow, we'll go to the beach.
  Si está caluroso mañana, iremos a la playa.
• If it is cold, you must wear warm clothes.
  Si está frío, debes usar ropa abrigada.
• If he doesn't do his homework, he can not go to the party.
  Si él no hace su tarea, no puede ir a la fiesta.
• If she doesn't call you, you can call her.
  Si ella no te llama, tú puedes llamarla.
• If you work hard, you may become a millonaire someday.
  Si trabajas duro, puede que te conviertas en un millonario algún día.
• If you spend more than you earn, you'll become a poor man.
  Si gastas más de lo que ganas, te convertirás en un hombre pobre.
• If they don't invite you, you must not go.
  Si ellos no te invitan, no debes ir.
• If we don't hurry, we'll miss our bus.
  Si no nos apuramos, perderemos nuestro autobus.
• If you pay now, you'll get a discount.
  Si pagas ahora, obtendrás un descuento.
• If they don't want to go out, they can stay home.
  Si no quieren salir, se pueden quedar en casa.
• If you drink too much, you'll get drunk.
  Si bebes demasiado, te emborracharás.
• If you feel sick, you must stay in bed.
  Si te sientes enfermo, debes quedarte en cama.
• If they don't come here, we'll have to go there.
  Si ellos no vienen aquí, tendremos que ir allí.

SECOND CONDITIONAL

Refiere a una situación hipotética y se forma según la estructura if + simple past + simple condicional. 

If clause	Main clause
If + Past Simple	would / could / might + verb
If I won the lottery,	I would travel around the world.

• If I won the lottery, I would travel around the world.
  Si ganara la lotería, viajaría por todo el mundo.
• If I were in Brazil, I would go to Rio de Janeiro.
  Si yo estuviese en Brasil, iría a Río de Janeiro.
• If I were you, I would buy that car.
  Si yo fuese tú, compraría ese auto.
• If he were in my place, he wouldn't do this.
  Si él estuviese en mi lugar, no haría esto.
• If I had more money, I would buy a nice apartment.
  Si yo tuviese más dinero, me compraría un lindo apartamento.
• If she had more time, she would travel more often.
  Si ella tuviera más tiempo, viajaría más a menudo.
• If it were not raining, we could go out.
  Si no estuviese lloviendo, podríamos salir.
• If we didn't have to work today, we could have a picnic.
  Si no tuviésemos que trabajar hoy, podríamos tener un picnic.
• If they won the lottery, they wouldn't work any more.
  Si ellos ganaran la lotería, no trabajarían más.
• If I saw her, I would ask her out.
  Si la viera, la invitaría a salir.
• If you went to Brazil, you wouldn't want to come back.
  Si fueras a Brazil, no querrías regresar.
• If they spoke Spanish, we would understand them.
  Si ellos hablasen español, los entenderíamos.
• If he didn't live by the river, he couldn't go fishing.
  Si el no viviera cerca del río, no podría ir a pescar.
• If I didn't want to go, I would tell you.
  Si no quisiera ir, te lo diría.
• If they worked for that company, they might have better salaries.
  Si ellos trabajaran para esa compañía, podrían tener mejores sueldos.
• If she wrote a book, it would be a best-seller.
  Si ella escribiese un libro, sería un best-seller.

SIMPLE PRESENT

Use the Simple Present to express the idea that an action is repeated or usual. The action can be a habit, a hobby, a daily event, a scheduled event or something that often happens. It can also be something a person often forgets or usually does not do.

Examples:

I play tennis.
She does not play tennis.
Does he play tennis?
The train leaves every morning at 8 AM.
The train does not leave at 9 AM.
When does the train usually leave?
She always forgets her purse.
He never forgets his wallet.
Every twelve months, the Earth circles the Sun.
Does the Sun circle the Earth?

                                                 SIMPLE PAST

Use the Simple Past to express the idea that an action started and finished at a specific time in the past. Sometimes, the speaker may not actually mention the specific time, but they do have one specific time in mind.

Examples:

I saw a movie yesterday.
I didn't see a play yesterday.
Last year, I traveled to Japan.
Last year, I didn't travel to Korea.
Did you have dinner last night?
She washed her car.
He didn't wash his car.

PAST PROGRESSIVE

The past progressive puts emphasis on the course of an action in the past.

Use of Past Progressive

• puts emphasis on the course of an action in the past

Example: He was playing football.

• two actions happening at the same time (in the past)

Example: While she was preparing dinner, he was washing the dishes.

• action going on at a certain time in the past

Example: When I was having breakfast, the phone suddenly rang.