Modal Verbs

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Modal Verbs

Modal Verbs

• Modal verbs are different from normal verbs

• No past simple "-ed"

• No 3rd person "-s"

• Modal verbs do not describe actions

• Modal verbs always accompany another verb

Modal Verbs - Obligation

• Must

• Have to

• "I must wear a uniform to PDS."

• "I have to eat food, or else I will die."

• ต้อง

Modal Verbs - Obligation

• Must not (mustn't)

• Do not have to (don't have to)

• "You must not smoke in class."

• "You don't have to come to PDS on weekends."

• 
  

Modal Verbs

• He must (not musts)

• She has to

• Everyone has to

• Anyone has to

Multiple Choice

"During Covid, we all _________ wear masks on BTS."

• musts

• has to

• must

Multiple Choice

"Everyone _________ come to school Monday through Friday."

• has to

• have to

Multiple Choice

"Students _________ skip class."

• must not

• has to

Modal Verbs - Permission / Prohibition

• Can

• Can't (cannot ; can not)

• "You can always go to the toilet in A. Aaron's class."

• "You can't go home after first period."

Multiple Choice

"No one from the US ______ enter Thailand during Covid."

• can

• can't

Multiple Choice

"Monks in Thailand usually ________ grow their hair long."

• can

• can't

Modal Verbs - Advice

• Should

• Ought to

• Had better

• "You should study hard for your exam."

• "You ought to study hard for your exam."

• "You had better study hard for your exam."

Modal Verbs - Advice

• Shouldn't

• "You should not sleep in class."

• (unless you are sleepy, then go ahead.)

Multiple Choice

"What color shirt do you think I ________ wear today?"

• has to

• have to

• must

• should

Multiple Choice

"I'm so behind in Chemistry! I _______ study a lot this weekend."

• have to

• has to

• must not

• shouldn't

Multiple Choice

"He is so smart. He never ________ study for any exam."

• have to

• has to

• must not

• must

Multiple Choice

"Bananas are full of potassium, but most people ____________ eat them."

• don't have to

• don't has to

• must not

• must

Multiple Choice

"Joe doesn't know anything in Biology. He really __________ study harder."

• should not

• have to

• must not

• ought to

Multiple Select

"I failed the test! I really ________ study harder next time."

• should

• ought to

• had better

• needn't

• banana

Multiple Choice

You __________ come to school this weekend, but you can if you want to.

• don't have to

• had better

• mustn't

• must