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0
votes
1answer
123 views

Does “ought to” imply irrelevance?

Does the phrase "ought to" express the irrelevance of the person taking the action? For example, if someone says "Governments which are just, ought to ensure food security for their citizens", are ...
1
vote
1answer
156 views

“…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 ...
0
votes
1answer
688 views

Must (Past Obligation Interrogative) “Must you have eaten all the food?” [closed]

Is the question "Must you have eaten all the food" correct when used in the past obligatory sense? The best examples I can find are quite ambiguous. "Must He have been less than perfectly kind to ...
2
votes
2answers
27k views

What is the difference between “have to”, “must”, and “should”? [duplicate]

Is there any difference between have to”, “must”, and “should”? If there is some difference between them, when do I have to use (nor not use) each of the constructions below? have to do something ...
-6
votes
1answer
639 views

“To have to” vs. “should” [closed]

I wonder which one to choose here: My father should drive carefully when it’s raining. My father has to drive carefully when it’s raining.
22
votes
5answers
5k views

Why should I use “ought to”?

Is "ought to" still used in modern English? If yes, in what contexts is it used, and is it used more in formal or informal cases?
2
votes
2answers
2k views

“I have to” vs. “I must”

When would you use the following? I have to go the market. I must go to the market. I need to go to the market. If I replace 'have' with 'had' would you have any other way to say it? E.g. I had to ...
1
vote
1answer
370 views

What is the degree of strength of the verbs listed below dealing with rules/advice?

I used to have a list that showed the increasing strength of these words, but I seemed to have lost it. The words/phrases are: must/mustn't, should/shouldn't, have to/don't have to, can/can't, and ...
3
votes
1answer
1k views

“Should” vs “have to”

Consider: You should do it. You have to do it. Does should show suggestion and have to show compulsion or motivation? Correct me if I'm wrong.
5
votes
4answers
12k views

Does 'should' imply an unquestionable command?

My question is prompted by a question on the programmers.stackexchange: This may be a duplicate of another question here on english.stackechange, but the answers given to that question did not ...