​Vocabulary

- Online booking

​- Destination

​- Book a flight

​- Search

Some text here about the topic of discussion

- Departure

- Check-out

- ​Make a reservation

- ​Apply for a visa

​Exercise 01

Match the words to make expressions.

​Exercise 02

Write a sentence using the expressions.

​Must/Have to/Need to

For obligation and necessity.

Use must and the base form to express obligation.

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MUSTN'T is a modal verb. It works as an auxiliary.

​Must

Use have to and the base form to express necessity.

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Use not have to and the base form to express lack of necessity.​

​

MUSTN'T is a modal verb. It works as an auxiliary.

​Have to

Use need to and the base form to express necessity.

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Use not need to to and the base form to express lack of necessity.​

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MUSTN'T is a modal verb. It works as an auxiliary.

​Need to

Use have got to and the base form to emphasize necessity.

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Notice that HAVE GOT TO is in Present Perfect.

​Have got to

​Exercise 03

complete the sentence using MUST, HAVE TO, or NEED TO.

​Exercise 04

On PADLET, slect a topic and write an obligation, a necessity, and something that is not necessary to do.​