Ability
Permission
Obligation
Prohibition
Advice
100

Alan ___ swim well.

Alan can swim well.

100

(Informal) ___ I borrow your pen?

Can I borrow your pen?

100

You ___ stop here.

You must stop here.

100

You ___ drive here.

You can't drive here.

100

(Negative) Young children ___ watch violent TV shows.

Young children shouldn't watch violent TV shows. 

200

(Negative) Jackie ____ play the piano. 

Jackie can't play the piano. 

200

(Informal) ___ I use your bathroom?

Can I use your bathroom?

200

You ___ to wear a seatbelt when you drive.

You have to wear a seatbelt when you drive. 

200

You  ___ smoke in the office.

You can't smoke in the office.

200

It's really cold outside, you ____ wear a jacket.

It's really cold outside, you should wear a jacket.

300

Brenda ______ to run quickly.

Brenda is able to run quickly. 

300

You ___ answer at least one question.

You must answer at least one question.

300

You ____ not play music. (strong)

You mustn't play music. 

300

I have a problem. ____ I call my parents or my friends?

I have a problem. Should I call my parents or my friends?

400

I ______ to speak two languages.

I am able to speak two languages. 

400

___ you tell me the way to the town center, please?

Could you tell me the way to the town center please?

400

I ___ to return the book now. 

I have to return the book now. 

400

You ____ not write with a pencil. (Strong)

You mustn't write with a pencil.  

400

You _____ slow down. You're driving too fast. (Strong)

You must slow down. You're driving too fast.  

500

(Negative) Stacey _______ to finish the marathon.

Stacey isn't able to finish the marathon. 

500

(Formal) ___ I have a glass of water?

May I have a glass of water?

500

(Negative) I ______ work on Sundays. 

I don't have to work on Sundays. (No obligation)

500

You ___ not use a cell phone. (Strong)

You mustn't use a cell phone.

500

(Negative) You _________ forget to pay your tuition. (Strong)

You must not forget to pay your tuition. 

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