GramifyLearn
IntermediateModal Verbs

Learn Modals of Advice (should, ought to, have to, had bette

Give and receive advice and recommendations using modal verbs.

Learning goal
Recognize and use this pattern in context.
Practice
10 randomized questions with explanations.
Suggested workflow
Study the examples, then take the quiz.

Grammar Focus

Modals of advice are modal verbs used to suggest, recommend, or warn someone about the best course of action. English has several modal verbs for giving advice, and each one carries a slightly different degree of strength or urgency.

  • Should is the most common modal for general advice — it expresses what you think is the right or best thing to do
  • Ought to has the same meaning as *should* but sounds slightly more formal or objective; they are often interchangeable
  • Had better expresses strong advice or a warning — it implies that something bad may happen if the advice is not followed
  • Have to / Has to expresses obligation — the action is necessary, often because of an external rule or requirement, not just a suggestion
  • All these modals are followed by the base form of the verb (infinitive without *to*), except *ought to*, which keeps *to*

Form & Structure

Should and Ought To

Subject + should/ought to + base verb (general advice)
You should drink more water every day.
She ought to see a doctor about that cough.
They should study harder if they want to pass the exam.

Had Better

Subject + had better + base verb (strong warning) | Subject + had better not + base verb (negative warning)
You had better leave now or you will miss the train.
He had better not forget his passport — the flight is tomorrow.
We had better call the hotel to confirm the reservation.

Have To (obligation)

Subject + have to/has to + base verb (external necessity) | Do/Does + subject + have to + base verb + ?
Students have to submit their assignments by Friday.
She has to wear a uniform at her new job.
Do you have to work on weekends?

Common Mistakes

Adding 'to' after 'should'

You should to eat more vegetables.
You should eat more vegetables.

Tip: After should and had better, use the base verb directly — never add *to*. Only *ought to* keeps the *to* as part of the modal itself.

Confusing 'had better' with past tense

I had better stayed home yesterday.
I had better stay home today.

Tip: Had better is always used for present or future advice, never past. Although it contains *had*, it is not a past tense structure. The verb after it must be in the base form.

Using 'should' and 'have to' interchangeably

You should to have a visa to enter the country. (treating advice as obligation)
You have to have a visa to enter the country.

Tip: Use have to when something is obligatory due to an external rule or law. Use should only for recommendations or personal opinions about the best course of action.

Why This Grammar Matters

Giving health advice to a friend or family member

“You should get more sleep — you look exhausted.”
“She ought to see a dentist about that toothache as soon as possible.”

Warning someone about a serious or urgent situation

“You had better leave the building immediately — there is a fire alarm.”
“He had better not drive in this weather — the roads are icy.”

Explaining rules and requirements at work or school

“All employees have to complete the online safety training before starting.”
“You have to bring your student ID to the exam hall.”

Asking for and receiving travel advice

“What should I pack for a trip to Scotland in November?”
“You ought to book your accommodation early — it gets very busy in summer.”