Have to, Don't have to, Mustn't, Should/Shouldn't

Have to, Don't have to, Mustn't, Should/Shouldn't

by Christian Nana

​Have to/Don't have to

​We use have to to indicate that something is necessary.

​

​You have to train hard to become a great champion.

​

​Don't have to indicates that it's not necessary. (It's up to the person.)

​

​You don't have to go to the gym to train hard. (It's not necessary as you can train hard anywhere.)

​Form

​Have to/Don't have to + Base verb

​I, You, We, They have/don't have to

​He, She, It has/doesn't have to

​Mustn't

​- To prohibit or stop somebody from doing something, we use mustn't. (rule)

​

​You mustn't go near that lake: it's infested with crocodiles.

​

​- Mustn't is always followed by a base verb.

​You mustn't go.

​Should/Shouldn't

​Should and shouldn't are used to give advice.

​

​- Should is used to tell someone it's good idea to do something.

​

Maybe you should start a new paragraph here.​

​

​- Shouldn't is to say that it's good they don't do it.

​

​You shouldn't have more than one idea in your paragraph.

​

​Should/Shouldn't + Base Verb

​Question form

​Should/Shouldn't+ Subject + Base Verb

​

Shouldn't you begin a new paragraph here?

Multiple Choice

You're late again. Perhaps you _____ leave home earlier.

• shouldn't

• have to

• should

Multiple Choice

a- I'm kind of nervous about my presentation.

b- Well, you ____ feel that way. It's not helpful.

• should

• shouldn't

• mustn't

Multiple Choice

a- Ploy, you ____ leave the table without cleaning up.

b- I'm sorry dad.

• mustn't

• have to

• don't have to

Multiple Choice

Lunch is provided by the school, so you ____ bring your lunch.

• shouldn't

• don't have to

• mustn't

Multiple Choice

You don't have to ____ coffee. We've got a coffee machine at home.

• buying

• bought

• buy

Multiple Choice

That music is very distracting. You should ____ headphones.

• used

• use

• to use

Multiple Choice

We ____ wear our shoes into the classroom at my school.

• don't have to

• shouldn't

• mustn'

Multiple Choice

Pam shouldn't ____ about the English exam. She always gets good scores.

• worry

• worried

• to worry

Fill in the Blanks

a-

you read the directions before you do the exercise?

b- You're right. I always make that mistake.

Fill in the Blanks

Have you seen the sign? You

drive slowly around here.

Fill in the Blanks

Do you

get up early at weekends?

Fill in the Blanks

My dad thinks my sister

work harder if she wants to pass her exam.

Fill in the Blanks

he have to write his full name?

Fill in the Blanks

I will be your guide on this trip. You can do whatever you feel like, but you

stay away from the group.

Fill in the Blanks

Rule number 1: The boss is always right, so you

never contradict him.