Estudiante

HOMEWORK
NOMBRE: Thalía Veloz
CURSO: 3° “A” Informática
FECHA: 05-10-2012
MODAL VERBS

Modals verbs are a category of auxiliary verbs. Modal verbs are also called modal auxiliaries or just manners. Ten English modals:
can |   | could |
may |   | might |
shall |   | should |
will |   | would |
must |   | ought to |
Manners express how a verb: the ability, the opportunity, the needor another condition of the main verb.
These verbs with main verbs are used to form statements or questions. Manners have no conjugations or time and cannot be used without a main verb.
In English, the main verb is always in the infinitive without to, except the modal ought.
In a statement, the word order is subject + modal + main verb.

suject | modal | Principal verb |
They
Ellos | canpueden | come.
venir. |
  |
Mike
Mike | should
debe | walk.
caminar. |
In questions, the word order is subject + modal + principal verb.
     Yes or no questions (yes-no questions)
When
¿Cuándo | can
pueden | they | come?
venir? |
  |
How
¿Cómo | could
podría | he | know?
saber? |
Can
The modal can, like the Spanish verb power, indicates a possibility or capability.
*Tom can help you.
Tom puede ayudarte.
* Wild animals can be dangerous.
Los animales salvajes pueden ser peligrosos.
* Eating out can be costly.
Comer fuera puede ser costoso.

In questions, can be used to apply for permission to do something or to ask about a possibility.
* Can I help you?
¿Puedo ayudarle?
* Can Mike have dinner with us?
¿Mike puede cenar con nosotros?* Who can answer the next question?
¿Quién puede contestar a la próxima pregunta?
* When can we get back the results?
¿Cuándo podemos tener los resultados?
Could
The modal Could indicates possibility or ability in the past.
* I could have told you that.
Podría haberte dicho eso.
* It could have been a disaster.
Podría haber sido un desastre.
* When I was young, I could runvery fast.
Cuando era jóven, podía correr muy rápidamente.
Could be used to speculate on future possibilities. Estes examples, could and might are synonymous.
* It could / might rain tonight.
Puede llover esta noche.
* This could / might be dangerous.
Eso puede / podría ser peligroso.
In the yes-no questions, could speculates about possibilities in the present or the future.
* Couldshe be the murderer?
¿Puede / Podría ser ella el asesina?
* Could this be a mistake?
¿Podría ser esto un error?
Could indicates an option.
* We could go see a movie.
Podemos / Podríamos ver una película.
* I could become a doctor.
Puedo / Podría hacerme médico.
On the questions of whether or not, could make a polite request. Estes examples, could and can are synonymous.
*Could / Can you open your window?
¿Puede usted abrir su ventana? 
* Could / Can you help me move this sofa?
¿Puedes ayudarme a mover este sofá?
Could be used to form the conditional that contains two sentences: one with "if" (if) and the other with the result.
Could prayer is on the outcome.
In these statements, could express a hypothetical situation:
* If I had time, I could playtennis with you.
Si tuviera tiempo, podría jugar tennis contigo.
* We could study together, if you want to.
Podemos estudiar juntos, si quieres.
* If it weren't raining, we could go on a picnic.
Si no estuviera lloviendo, podríamos ir de picnic.

Could be used to speculate on a possibility do not get done because a condition do not get fulfilled.
* If we had left sooner, we could havetaken the train.
Si hubiéramos salido más pronto, podríamos haber tomado el tren.
* I could have passed the exam, if I had studied more.
Podría haber pasado el examen si hubiera estudiado más.
* I'm glad we took umbrellas. We could have gotten soaked.
Estoy feliz que hayamos llevado paraguas. Podríamos habernos empapado.
Shall and Will
Manners Will / Shall + principal verb form the...