How to use "would," "could," "should," "would have," "could have," "should have," "would have been," "could have been," and "should have been" in a proper way?

WOULD
1. Wish - I would like to see that book.
2. Refusal - She wouldn't disclose anything.
3. Determination - He would have his own way.
4. Past habit - He would walk on the street for
hours.
5. Willingness (in the past) - She said that she
would help me.
6. Polite speech - Would you mind helping me
out ?
7. Uncertainty - Had we met, I would have told
her everything.
COULD
1. Possibility - She could be the one who stole the
money.
2. Past ability - I could speak English fluently when
I was a kid.
3. Suggestion - You could spend your vacation in
Paris.
4. Conditional - If I had more time, I could travel
around the world.
5. Polite request - Could I borrow your pencil ?
SHOULD
1. Duty or Obligation - We should help the poor.
2. Advice - You shouldn't laugh at her.
3. Supposition, Possibility, Condition - If it should
rain, the school will remain closed.
4. Negative purpose (after lest) - Take heed lest
you should fall.
WOULD HAVE, SHOULD HAVE, COULD HAVE
To talk about things that didn't really happen in the
past.
Could have + past participle - Something was
possible in the past, or you had the ability to do
something in the past, but you didn't do it.
I could have stayed up late, but I decided to go to
bed early.
Should have + past participle - Something that
would have been a good idea, but you didn't do it
or something that we think has already happened,
but we're not certain about it.
I should have gone to bed early.
The train should have arrived by now.
Would have + past participle - Used in past
conditionals to talk about something that did not
happen.
If it would have been a little warmer, we would
have gone for a swim.
WOULD HAVE BEEN, COULD HAVE BEEN, SHOULD
HAVE BEEN
These are the second conditional progressive forms of
Would, Could and Should respectively.

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