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Modals with 'have'

Level: intermediate

We can use a modal verb with have and a past participle:

Subject Modal have Past participle  
They will have arrived by now.
You might have seen the film.
Jack and Jill would have been late.

We use a modal verb with have:

  • to refer back from the present:

It's nearly eight o'clock. They will have arrived by now.

  • to refer back from a point of time in the past:

We were very worried. We thought someone might have taken the car.

  • to refer back from a point of time in the future:

We won't eat until they arrive. They might not have had supper.

  • to refer to past time:

You should have helped her when she asked.
They might have got lost. Nobody knows where they are.

Modal verbs with have 1

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Modal verbs with have 2

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Comments

Please explain the difference between the two sentences.
1.What would I miss if I choose something over something?
2.What could I miss if I choose something over something?
Maybe this is weird, but could you explain why we don't use "we could like to" instead of "we would like to".
Please explain the difference between could and would in a simple manner.

Hello Mussorie,

As with all modal verbs, context is key to the meaning.

In general, would suggests an imagined choice, option or likely result; could describes possibility. For example:

I would go to the party - my choice or decision, if I were in a position to choose.

I could go to the party - it is possible for me to go.

Since like is a personal preference, it is logical that we use would like to (option/choice) rather than could like to (possibility).

 

In your sentences, would describes the likely or certain result, while could describes a possible but not certain result. You would miss the meeting is sure, if the condition is fulfilled. You could miss the meeting is not certain, even if the condition is fulfilled; it may depend on other factors.

 

Peter

The LearnEnglish Team

Hi, while I was searching new words, I realised something.
For example;
"Several branches of the bank have recently opened up across China."
Why we didn't use passive here? Obviously branches didn't open itself;somebody opened ?
Or If there is a rule, I have not known about information about the rule yet. Can you say the tip please?

Hi Nuro,

Yes, we could use a passive here too: several brances of the bank have recently been opened up ... The meaning is the same, but the passive highlights the role of people more in this activity (opening up branches).

For open and some other verbs, we can put the thing as the subject (even though, logically speaking, you might think that a thing like a branch of a bank cannot act by itself). These verbs are called ergative verbs and you can find more explanations and examples here. I hope it helps :)

Best wishes,

Jonathan

The LearnEnglish Team

Hello. Are the three following sentences correct? If so, what are the differences in meaning.
1- I really must lose some weight. My clothes hardly fit me anymore.
2- I really have to lose some weight. My clothes hardly fit me anymore.
3- I really need to lose some weight. My clothes hardly fit me anymore.
Thank you.

Hello Ahmed Imam,

All three are correct (well done!) and in general they all mean the same thing.

All the best,

Kirk

The LearnEnglish Team

what about internal or external obligation?

Hello Ahmed Imam,

Typically grammars say that 'must' is used for internal obligations and 'have to' is used for external ones. This is a good guideline, but I'm not sure it always holds up, and in any case it's sometimes difficult to distinguish between external and internal. For example, to my mind, all of the sentences you wrote could express internal motivation. On the other hand, I'd probably not use the first one to express external obligation -- but then again, I almost never use the modal verb 'must', so it may have more to do with that than anything else.

I hope this helps. By the way, if there's a specific point you want to ask about, please mention it in your comment. We could often write much more in our explanations, but simply don't have the time to write comprehensive replies. We're happy to try to help with specific queries, but can't afford to make guesses.

All the best,

Kirk

The LearnEnglish Team

Hi team,
"Everyone ___ have a birth certificate. However, you didn't have to have one until about 100 years ago."
Teacher, I think blank is -has to- as rule.But answer key says -must-Is there a mistake?

Hi Nuro,

Both forms are possible here. I don't believe this is a question from our site so you'd have to ask the author why the key allows only 'must'.

 

Peter

The LearnEnglish Team

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