EV3U9

GRAMMAR
​modals of necessity:

​Must
Have to
Need to

​Modals of necessity: have to, need to, must

have to: tener que - obligación

need to: requerir (de)

​must: deber - obligación personal

-> ​Use them to say something is necessary.

​Tips

Especially in American English, must is not used often in everyday speech. In most cases, have to is used:

I have to be on time for class today.

Must, when used at all, is used in formal written rules, or only for strong emphasis:

Students must pay their fees by June 25.

​There's no change in third person when must is used.

​Examples

Multiple Choice

Use MUST, NEED TO or HAVE TO to say that something is

• necessary

• not necessary

Multiple Choice

After MUST, NEED TO or HAVE TO use a ....

• Verb+ing

• verb in the base form

Multiple Choice

Use MUST NOT, DON'T/DOESN'T NEED TO / HAVE TO to say that something is

• necessary

• not necessary

Multiple Choice

Complete the sentences with the correct form of HAVE TO use the verb in parenthesis:

SHE .................................. YOUR PASSPORT IF YOU ARE GOING TO TRAVEL. (CARRY)

• have to carry

• has to carry

• have carry

• has carry

Multiple Choice

For respect, you....... smoke here.

• have to

• don’t have to

• must

• mustn’t

Multiple Choice

Obama .... leave the White House next January

• HAVE TO
• HAS TO
• MUSN'T
• DOESN'T HAVE TO

Multiple Choice

In Japan, you .......... remove your shoes before you enter.

• must

• need to

• have to

​GRAMMAR

​GRAMMAR

Multiple Choice

Use CAN, MAY, or COULD to say that you are allowed to do something.

• TRUE

• FALSE

Multiple Choice

Use CANNOT, or MUST NOT to say that you are NOT allowed to do something.

• TRUE

• FALSE

Multiple Choice

I heard that we can work from home now. ________ we work any hours we want?

• CAN

• MUST

• NONE

Multiple Choice

No, We .............. . We have to work from 9:00 am to 5:00 pm

• MAY

• CAN'T

• NONE

Multiple Choice

I guess we _______ take breaks, though.

• CAN

• MUST NOT

• NONE

Multiple Choice

Yeah, but we have to log in and _____ stop working for more than 15 minutes at time - except at lunch time.

• CAN

• CAN'T

• NONE

Multiple Choice

And the boss's email said, "you ______ use your computer for personal use. "Our computer knows everything"

• COULD

• MUST NOT

• NONE

Multiple Choice

And they tell the boss! But it's stll great that we ______ work from home.

• COULD

• CAN

• NONE