Hello, Welcome to six minute grammar with me, Finn and me Alice Hello in today's program we're talking about have two and must have do on.

Must we'll look at what they mean?

We'll find out how to use them in sentences.

We'll have a pronunciation tip and we'll do some practice with a cuisine.

So let's get started.

Way use Both must and have to in front of verbs to talk about obligations things that are necessary in natural English.

They often have very similar meanings.

And here's Catherine.

Hello, Hello to demonstrate.

I have to leave work early today.

I must leave work early today.

Thanks, Catherine.

I have to leave and I must leave.

Those sentences have pretty similar meanings, but that's not always the case.

Eso let's look more closely at half to Katherine.

My doctor says I have to lose weight.

If you go to Russia, you have to get a visa so we use have to for things that are necessary, including laws.

You can't go to some countries without a visa.

You have to get one Yes, with have to.

The obligation usually comes from someone else a doctor, a government or maybe your boss on this is where must is sometimes different must often suggests that the speaker decided themselves that it's necessary to do something.

Here are some examples I'm putting on weight.

I must join a gym.

I haven't spoken to my sister this week.

I must give her a core, so that must four personal necessities we can also use must to make recommendations like this.

When you go to Germany, you must try brat first.

It's delicious.

We sometimes seem must informal notices or rules of an organization.

Ah, hospital sign might say visitors must wash their hands before leaving the world.

Now let's look at negatives first.

Don't have to.

Okay, if you don't have to do something, it isn't necessary to do it.

But you can if you want Katherine in the UK, you don't have to drink alcohol in Popes.

Don't have to means it's your choice, but mustn't means don't do it.

It is necessary not to do it.

You mustn't eat meat that's old.

In other words, don't eat meat that's old.

Could make you ill s so we can use mustn't for both rules on and personal recommendations.

Katherine, you mustn't forget to call your sister.

Passengers must not speak to the driver while the bus is moving.

Passengers must not.

That sounds serious.

And it does.

The long form must not is more formal than the short form.

Mustn't BBC learning english dot com on we're talking about Must Andi have to now a quick word about tenses?

Yes, it's important to note that we don't use must in the future or the past.

Instead, it's will have to for the future and had to for the past.

Katherine, you must talk to your doctor.

You'll have to see her tomorrow.

You didn't have to answer all the questions in yesterday's exam, but you must answer all the questions in today's exam Now.

Time for that pronunciation tip We promised you Yes, in natural speech have to and must can get a bit squashed.

I have to go to the doctor.

I must join a gym.

So have to Sounds like after I have to go to the doctor after and must sounds like must without the final turn sound.

I must join a gym must So listen out for those sounds in our quiz.

Oh yes, we must have a quiz before we go.

I'll say a sentence with Must you decide if I'm talking about a rule or if it's just a personal recommendation?

Ready Number one.

I need some exercise.

I must go to the gym.

Andi, that's a personal recommendation on That's right.

Number two again.

Is it a rule or is it a personal recommendation?

You mustn't smoke in the building.

No smoking in the buildings.

That's a rule.

That's right.

Now number three.

I'm going to say a sentence in the present tense, and you have to put it into the past.

Here goes.

I must have a cup of tea and in the past it's I had toe.

Have a cup of tea.

Well done.

If you got all those right, there's lots more about must and have to.

On our website at BBC Learning english dot com, join us again for most six minute Gramma.