Level Up Your English: Should You or Must You?

Updated: an hour ago

Using modal verbs should, ought, had better, have to, and must


The modal verbs should, ought, had better, have to, and must are useful for giving advice and for talking about obligations and better ways of doing things. They are close in meaning but differ in strength and attitude of the speaker.

Let's start with should.


Should

1. Should can be used to express a better way of doing something or to give advice.


Example:

He should try to attend the meeting because his boss will be there.


In this sentence, should is the modal verb, and attend is the main verb.


The simplest form of a main verb follows a modal verb: He should attend the meeting.


Wrong:

Do not add the third person "s" to a verb after a modal: He should attends the meeting.

Do not use the infinitive verb after a modal: He should to attend the meeting.


2. Should can be used to express a large amount of certainty.


Example:

I should be at the meeting on time because I have plenty of time to get there.


3. Should can be a slightly more formal substitute for the conditional word if:


Example:

Should you need a ride to our meeting, don't hesitate to give me a call.


4. Should can be used to express regret for past action or inaction.

The past form of the modal should is should have + the past participle:


Examples:

I should not have missed that meeting with the boss.

You should have attended the meeting because your boss was there.


Ought to

Note: Ought rhymes with got


Ought to is similar in meaning to should but not used as often and is less formal.


Examples:

You ought to attend the meeting tomorrow.


Past Tense: You ought to have attended the meeting because your boss was there.


Had better

Had better is stronger than should and ought to.


Authority figures such as parents often use had better.


Had better implies an indirect order or a warning.


Example:

You had better attend the meeting!


If someone tells you, "You had better attend the meeting," they are not making a polite suggestion. If that someone is your supervisor, it is likely an indirect order or an indirect way of telling you, "Attend the meeting or there will be negative consequences." If that someone is a colleague, it could be a helpful warning: if you don't attend the meeting, you could be in some trouble.


Bonus:

In other words, should you not attend the meeting, you will be in some trouble.


Have to and Must

Have to and must both express a requirement. Must is just a little stronger or direct and perhaps a little more formal.


Note:

Have got to is present tense and the less formal form of have to.


Examples:

You have to attend the meeting if you want to be promoted. (Less formal: You have got to attend...)

You must attend the meeting to be considered for a promotion.


Modals in Rapid Speech

When native speakers speak quickly or very informally, modals often contain unstressed syllables or are shortened. Sometimes should have sounds like "shoulda." Ought to can sound like "otta." Had better may sound like "had betta." Have to becomes "hafta." Have got to is shortened to "gotta." Should and must are already short, so they are not usually modified.


Should have: You shoulda gone to the meeting.


Ought to: You otta go to the meeting.


Had better: You had betta go to the meeting.


Have to: You hafta go to the meeting.


Have got to: You gotta go to the meeting.

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