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Questions tagged [have-to-versus-must]

Questions related to the (purported) differences between “have to do something” and “must do something”.

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must have, have to have, or should have: What should I use? [closed]

You must have the physical and mental strength to accomplish whatever you want in sport You can see the sentence above, I want to say. I want to say some fact, and want to express some obligation, ...
Andrey Radkevich's user avatar
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1 answer

Past tense vs present perfect tense

I have queries about past tense and present perfect tense. I have made a appointment to see the university careers advisors immediately after the seminar,So I will need to leave on time. I have done ...
Encipher's user avatar
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“Don’t have to” at the end of the sentence

Is it grammatically correct to use "don’t have to" at the end of a sentence? Ex: we can walk to our house if you want. But we_____. The bus will come. And if we can use it here, where’s the verb ...
Belle's user avatar
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-3 votes
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Why is the "have to" in "must have to" not redundant here?

We can use must have to to say that we conclude something based on what we know about a present situation ... I can't access the database. You must have to put in a password. (= a password is ...
Marcel's user avatar
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1 vote
2 answers

"has to" vs "must" in passive

I've been recently writing a technical document and I wrote something like It has to be possible to come back to the old version. (paraphrasing here, but I think sense is conveyed) However MS Word ...
Wylfryd's user avatar
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6 votes
2 answers

Deontic “must”, “have to” and “had to”

In English, to express strong obligation we can use either must or have (got) to. Grammars remind us that must is often used to express internal (personal) obligation, deduction (likelihood), and ...
Mari-Lou A's user avatar
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2 answers

Must realise VS Must have realised

A question in an English exercise book puzzled me. The instruction is "Complete the second sentence so that it means the same as the first, using the word in bold. Use between two and five words." ...
Jason Tong's user avatar
3 votes
2 answers

had to have been vs. has to have been vs. must have been

At 4:18 of this video titled "Trump's UN Speech Advocates For Both Peace And Nuclear War", Stephen Colbert said: Now, the most awkward moment had to have been when he brought up Venezuela. And ...
JK2's user avatar
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4 votes
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must vs have to: British usage and academic rules

I am teaching 'have to' vs 'must' (British English usage) and, according to the book, the difference is as follows: must: it's necessary to do it (because the speaker says so) have to: it's ...
SC for reinstatement of Monica's user avatar
1 vote
1 answer

"...mustn't have done..": can it mean reproach for a past action or prohibition of a future action?

Can "You mustn't have done that" have a similar meaning to "You shouldn't have done that" / "You were not supposed to do it (but you did)"? (not logical probability but obligation) Since we have the ...
Runglish's user avatar
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1 answer

can't have worked vs mustn't have worked [duplicate]

I'm trying to understand why answer is supposed to be B here: She's got a terrible mark in the exam so she ....very hard at all. A. mustn't have worked B. can't have worked C. didn't work My answer ...
Oyeme's user avatar
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The use of "had to"

Does the following phrase mean it must be true? This fact had to be true. Or it must have been true? I would like a native speaker's opinion on this. I often hear it used in the second ...
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