SHOULD/SHOULDN´T HAVE

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Should
Se usa "should" para dar o pedir consejo o para dar opiniones en el presente:
  • "I have a terrible stomachache." "You should go to the doctor's."
  • "I haven’t heard from my father." "You should call him."
  • "She's not happy with the salary offered." "She shouldn't accept the job."

Forma
Se usa "should" / "shouldn't" + el infinitivo del verbo principal (sin "to") 

Ejemplo 

I
You
He, She, It
We
They
should
do
more exercise.
get
a new car.
shouldn't
(should not)
smoke.
spend
so much money.

Should
I
you
he / she / it
we
they
get
more qualifications?
wear
something different?
Should have
Se usa "should have" para dar su opinión o pedir su opinión en el presente en relación a algo que sucedió en el pasado:
  • "I had a terrible stomachache." "You should have gone to the doctor’s."
  • "I didn’t hear from my father last week." "You should have called him."
  • "She isn't happy with the salary she’s getting." "She shouldn't have accepted the job."





Forma
Se usa "should" / "shouldn't have" + el participio pasado del verbo principal 

Ejemplo 

I
You
He / She / It
We
They
should have
taken
a taxi.
shouldn't have
written
that comment.

Should
I
you
he / she / it
we
they
have worked
overtime?

Ejercicios
1Haven't they given you the money back yet? They (do)  it last Monday. http://speakspeak.com/a/images/quiz/mark_blank.gif
2All the applicants (register)  before the end of September, otherwise they will not receive the instructions in time. http://speakspeak.com/a/images/quiz/mark_blank.gif
3He (arrived)  at 10, but he was almost half an hour late. http://speakspeak.com/a/images/quiz/mark_blank.gif
4You (finish)  this project completely before you start the next one. http://speakspeak.com/a/images/quiz/mark_blank.gif
5You (lend/not)  him so much money when he asked. It will take you a lot of time to get it back. http://speakspeak.com/a/images/quiz/mark_blank.gif
6You (call)  them yesterday. Now it's too late. http://speakspeak.com/a/images/quiz/mark_blank.gif
7We (invite)  them to last week's meeting. Now it looks as if we don't want to do business with them. http://speakspeak.com/a/images/quiz/mark_blank.gif
8She (take)  more exercise. It would do her good. http://speakspeak.com/a/images/quiz/mark_blank.gif
9You (leave/never)  any documents on your desk when you are out of the office. There are a lot of sensitive and confidential details in them. http://speakspeak.com/a/images/quiz/mark_blank.gif
10(we/contact)  him and tell him about the changes? Otherwise he won't know what's happening http://speakspeak.com/a/images/quiz/mark_blank.gif

Watch the video with the explanations and examples: https://youtu.be/nOZ9SF7K3nc , https://youtu.be/x4mAWplIlzQ



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