Where We Use Must Have?

When to use have to and must?

Have to mainly expresses general obligations, while must is used for specific obligations: I have to brush my teeth twice a day.

I must tell you something.

Important: To express obligation, duty or necessity in the future or the past, must and need are not used..

What is must have in grammar?

Must have expresses a conclusion about what happened (past), and is based on putting details and clues together and making an inference (a sure guess). The passengers in the car must have been extremely frightened.

Can I use have in English?

Some people consider this wrong and that the correct word is may, but in contemporary English, using can have signifies permission over ability, because the cases where someone is unable to possess something are very few and far between.

What is the difference shall and will?

As a general rule, use ‘will’ for affirmative and negative sentences about the future. Use ‘will’ for requests too. If you want to make an offer or suggestion with I/we, use ‘shall’ in the question form. For very formal statements, especially to describe obligations, use ‘shall’.

Can and could grammar?

We sometimes use be able to instead of “can” or “could” for ability. Be able to is possible in all tenses – but “can” is possible only in the present and “could” is possible only in the past for ability. In addition, “can” and “could” have no infinitive form.

CAN is used for?

“Can” is one of the most commonly used modal verbs in English. It can be used to express ability or opportunity, to request or offer permission, and to show possibility or impossibility. Examples: I can ride a horse.

What is must an example of?

The definition of a must is something that has to be done. An example of a must is seeing a movie that has won a Best Picture Academy Award. Must is used to express a requirement or a necessity. An example of must is a student having to get all necessary credits to graduate.

Is a must meaning?

A necessity; a requirement. For example, The Louvre is a must for visitors to Paris, or This book is a must for serious students of English. [

Is a must in sentence?

Meaning: We say something is A MUST if it is really necessary to have it. Example: If you are visiting London, a good map is a must. Now, try to write your own sentences using MUST, making sure that they are true to your own life as this will help you to remember them better! If you like this lesson, please share it.

When should we use must?

Both “must” and “should” are model verbs. The term “must” is commonly used to express any unavoidable requirement or obligation. On the other hand, “should” is used as a probability, obligation, advice, recommendation, conditional, and exceptional mood.

What are they called must?

1 : an imperative need or duty : requirement. 2 : an indispensable item : essential exercise is a must.

Is must have past tense?

The modal verb must has two past tense forms: had to and must have. When expressing obligation, the past of must and have to is always had to: … I had to wash my car yesterday .

Where is must used?

Must is used to express obligation, give orders and give advice. It can only be used for present and future reference. When the past is involved, you use have to.

How do you use must have in a sentence?

Must-have sentence examplesHe must have changed clothes during the night. … Alex must have listened to her message. … Someone must have forgotten something. … Well, she must have thought it was something. … You must have seen the reports. … He must have been really exhausted. … My party invitation must have been lost in the mail.More items…

What is difference between must and have?

“Have to’ is more common, especially in North America, but in the UK there is a subtle difference: ‘must’ is used for internal obligation and ‘have to’ is used for external obligation. For example: I have to take these pills twice a day (the doctor told me to) I must study harder (this comes from my own motivation)