Using Would Have, Could Have, Should Have - English Grammar Lesson

In this lesson, you can learn how to use would have, should have and could have. Did you learn anything new in this lesson? Let us know in the comments!
These verbs—would, should, could, etc.—are modal verbs, so they don’t have past forms like normal verbs do. Instead, you can talk about the past by adding have plus a past participle after the verb.
In this class, you’ll learn how to use these modal verbs to talk about the past in English, what they mean, and how they’re different.

See the full version of this lesson with text: https://www.oxfordonlineenglish.com/would-have-could-have-should-have.

Contents:
1. Would Have 1:34
2. Could Have 3:58
3. Should Have 7:42
4. Would Have, Could Have, Should Have 10:23

This lesson will help you:
- Learn what the imaginary past is with 'would have'.
- Learn what the imaginary past is with 'could have'.
- Use 'could have' to talk about possibility for the past.
- See how to use 'could have' to criticize something someone didn't do.
- Explain that someone was lucky to avoid something in the past using 'could have'.
- Use 'should have' to criticize something someone did or didn't do in the past.
- Talk about something you expected to happen, but it actually didn't, using 'should have'.

See more free English lessons like this on our website: https://www.oxfordonlineenglish.com/.

Oh…

Hello!

Ah…

I should have prepared for this lesson, I
guess.

Now I don’t know what to say.

Whoops!

Martin!

You could have at least warned me.

Now what are we going to do?

I would have done it, but I was just so busy…

I could have done it if you’d told me.

Don’t you have some notes, or something
we can use?

I had some notes, but I can’t find them.

Well, think about it: where could they be?

Not sure…

I could have left them on the bus.

I should never have agreed to do this video…

Hi, I’m Martin.

Welcome to Oxford Online English!

In this lesson, you can learn how to use would
have, should have and could have.

These verbs—would, should, could, etc.—are
modal verbs, so they don’t have past forms

like normal verbs do.

Instead, you can talk about the past by adding
have plus a past participle after the verb.

In this lesson, you’ll learn how to use
those modal verbs to talk about the past in

English, what they mean, and how they’re
different.

Sometimes, you have moments when your life
could go in very different ways.

For example, maybe you take an important exam,
and your result decides where you can go to

university.

Maybe you’re thinking about moving to another
country.

Do you stay where you are, or do you leave?

Perhaps you’re in a relationship and things
aren’t going so well.

Do you stay and try to make it work, or do
you move on?

Life is full of these important moments and
decisions.

Try to think of something like this from your
past.

Now, ask yourself: you made the choices you
made.

You passed the exam, or you failed it; you
moved to another country, or you didn’t.

That’s reality, but what if things had gone
the other way?

This is the imaginary past.

You’re imagining a different version of
the past.

You’re asking yourself questions like:

What if I had worked a bit harder, and passed
that exam?

What if I had taken that job, and moved to
Italy?

What if I had told her how I feel?

This is where you use would have.

Use would have to talk about the imaginary
past.

For example:

If I had got better exam results, I would
have got into Harvard.

I wouldn’t have met my wife if I had moved
to Italy seven years ago.

If I hadn’t forgotten my pen that day, I
wouldn’t have asked to borrow yours, and

we wouldn’t have become friends!

Think about your important moment from the
past, when your life could have gone in two

very different directions: what would have
happened if things had gone the other way?

So, you can use would have to talk about the
imaginary past.

What about our other verbs?

Where do you suppose they are?

I don’t know.

They’re usually so reliable.

I guess they could have mixed up the date?

Shall we try calling them again?

We can’t wait forever.

When will it be ready?

I think next Thursday.

You said you’d have it finished by the end
of this week!

Now what am I going to do?

Sorry.

You could have told me sooner that you weren’t
going to finish on time.

Doctor, is it serious?

No, it’s just a scratch, but be more careful
next time.

You could have really hurt yourself!

You can also use could have to talk about the imaginary past:

If I’d had more time, I could have finished everything.

He could have won it if he hadn’t slipped at the start.

When you use could have to talk about the imaginary past, you’re talking about possibilities.

You’re talking about opportunities and chances which you didn’t have in reality,

but in your imaginary version of the past, you would have had these chances.

However, could have can also have different meanings. Let’s look:

Here, you saw three more ways to use could
have.

Remember that you can go back and review the
dialogues if you need to.

Can you explain how could have is used in
each of these dialogues?

Could have can mean that you aren’t sure
about something in the past.

You’re talking about a possibility:

They could have mixed up the date.

I’ve lost my keys.

I could have left them at work.

Where are they?

I guess they could have missed the train.

In these examples, you aren’t sure about
something that happened in the past.

You use could have to make a guess about what
happened.

You can also use could have to criticise someone:

You could have told me sooner.

You could have tidied up a bit.

You could have worn something a bit nicer.

In these examples, you want to criticise the
other person for something they didn’t do.

Finally, you can use could have to mean that
somebody was lucky to avoid a bad situation

in the past:

It’s just a scratch, but you could have
really hurt yourself.

We were really late, and we could have missed
our plane, but luckily we just made it.

Let’s review quickly.

Could have has four different meanings.

Can you remember them?

You can use could have to talk about the imaginary
past,

to guess about something in the past which
you aren’t sure about,

to criticise someone for something they didn’t
do,

and to say that someone was lucky to avoid
a bad situation.

Next, what about should have?

You just saw that could have can be used to
criticise someone.

Should have is similar, but you can use it
in a wider variety of ways.

Like could have, you can use it to criticise
something that someone didn’t do in the

past:

You should have called me like you promised.

He should have checked the recipe before he
started cooking.

They should have practiced penalties
before the match.

You can also use it to criticise something
that someone did:

You shouldn’t have drunk so much at the
wedding!

She shouldn’t have left everything to the
last minute.

You can even use it to criticise yourself,
if you regret something which you did in the

past:

I should have realised what was going on.

I shouldn’t have said that.

You can also use should have to apologise
to someone.

If you say I shouldn’t have said that, you’re
admitting that you made the wrong choice,

and that you regret it.

This is the most common use of should have:
criticising others or yourself, and talking

about things you regret in the past.

However, it has one more meaning.

Look at three examples.

Can you work out what should have means here?

Here, you use should have to talk about something
which you expected to happen, but it didn’t

happen.

They should have been here by now means that
you expected them to have arrived before now,

but you’re still waiting.

It should have been ready an hour ago means
that you expected everything to be ready earlier.

Maybe you’re cooking something, and it’s
taking much longer than you thought it would.

The plane should have landed at seven thirty
means that you expected the plane to land

then, but it didn’t.

Probably, you mean that the plane is late,
and you’re still waiting for it.

Now, you should have learned two different
ways to use should have.

Let’s practice using would have, could have
and should have together.

You should have told me your friends were
coming!

I would have made some extra food.

Sorry!

I would have called you, but I had no phone
credit.

I should have topped up before we went out.

What are we going to eat?

We don’t have much in the fridge.

I should have stopped and got a takeaway on
the way.

Not to worry: we’ll order something.

Where’s the food?

I’m so hungry!

They should have come by now, right?

They’re probably just busy.

They could have forgotten.

They would have called if there was a problem,
don’t you think?

Relax!

You should have had a snack when you got in.

It’ll be here soon.

That was delicious!

I’ve never had such a good meal.

You could have left some for me.

What am I supposed to eat?

Oh…

I’m sorry!

I would have left some if I’d known you
wanted some.

I should have asked.

Yeah, you should have.

Oh well, there’s half a cucumber in the
fridge, I think.

Look at three sentences from the dialogues.

Can you explain what they mean?

The first sentence is talking about the imaginary
past.

It means that if I had known you were bringing
guests, I would have made some more food.

But, in reality, I didn’t know, so I didn’t
make enough food.

The second sentence is talking about something
you aren’t sure about in the past.

Do you remember the situation?

We were waiting for our takeaway to arrive.

It was late, and we didn’t know what
happened.

You use could have here to make a guess about
something in the past when you don’t know

what happened.

The third sentence is a criticism, or an expression
of regret.

If you say this, you mean that you made a
mistake in the past.

Think back to the dialogues.

Did we use should have or could have in any
other ways?

Look at two more sentences:

They should have come by now.

You could have left some for me.

What do should have and could have mean here?

Here, should have means that something didn’t
happen the way you expected.

You expected the food to be here by now, but
it isn’t.

Could have is used to criticise something
which someone else didn’t do.

Now, hopefully you understand how to use would
have, could have and should have.

Get more practice with the full version of
this lesson, which includes a quiz to help

your understanding of this topic.

There’s a link underneath the video.

You can also find many more free English lessons
on our website: Oxford Online English.com.

Finally, a question: did you learn anything
new about using would have, could have or

should have?

What was new for you in this lesson?

Please let us know in the comments.

Thanks for watching!

See you next time!