Must or Have to (1)

Practise using "must" and "have to" correctly!

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We use "must" and "have to" to talk about things that are necessary to do. They almost mean the same. We often use "must" for more personal ideas about what is necessary to do. For example: I must send Ben a letter (I really want to write to him). Must is also used in formal writing or notices. For example: Passengers must fasten their seatbelts.

We use "have to" for what somebody else thinks is necessary to do or rules that cannot be changed. For example: Mum said I have to send Ben a letter. (Mum wants me to write a letter). OR: You have to wear a school uniform in England.

"Must" is not used in questions, use "have to" instead!
For sentences in the past or future you also always use "have to" (in the correct tense). For example: I had to help Mum with the gardening yesterday (Past Tense). I will have to help mum with the gardening tomorrow (Future Tense).

I don't want to, but I __________ look after my little sister this afternoon.

Solution:
have to

When do you __________ be home?

Solution:
have to

I __________ remember to send my aunt a birthday card, it is important to me!

I [[spacerL]] remember to send my aunt a birthday card, it is important to me!

Solution:
must

Why do you always __________ be so late?

Why do you always [[spacerL]] be so late?

Solution:
have to

I __________ thank Hugo for helping me with the homework, that was so nice of him.

Solution:
must

Dad says I __________ write a letter to Uncle Bill, but I really don't like him.

Solution:
have to

Passengers __________ not smoke onboard our planes!

Solution:
must

I really __________ tell Mum about the great news!

Solution:
must

Do you __________ play the piano every day?

Solution:
have to

Ben __________ do the shopping yesterday because Mum and Dad were away.

Solution:
had to

Lucas __________ finish the English essay by tomorrow, Mr Bell said.

Solution:
will have to

She __________ take the bus last week because of the heavy snowfall.

She [[spacerL]] take the bus last week because of the heavy snowfall.

Solution:
had to

What do you __________ do after school?

Solution:
have to

I __________ ring Isabel today, I want to tell her something!

Solution:
must