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modals verbs :check:, Remember: must is similar with have to, but we use…
modals verbs :check:
Ought to: isn´t as common as should, it´s used mostly in writing, and the negative form is rare. And we use ought to to tell someone that something is a good ideia.
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Ought to form, afirmative: Ought to comes first in the verb phrase (after the subject and before another verb). example:We ought to do more exercise. :check:
The negative is formed by adding ‘not’ after ought (ought not to). It can be contracted to oughtn’t to. We don’t use don’t, doesn’t, didn’t with ought to:
We ought not to have ordered so much food. :red_circle:
Question: The subject and ought to change position to form questions. We don’t use do, does, did:
Ought she to call the police?
HAVE TO
Negative form :no_entry:
The negative of have to is formed using do not, does not, did not or don’t, doesn’t, didn’t:
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Question form :question:
Do, does, did are used before the subject to form questions with have to:
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*Remember: have to is similar with must, but we use have to for obligations more situational* : :fire:
must
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We use “must” to talk about obligations. Often, when we use “must”, the authority for the obligation comes from the person who is speaking. :black_flag:
Remember that “must” is a modal auxiliary verb. This means that it doesn’t change its ending (I must, he must, etc) and that it’s followed by the infinitive without ‘to’. (“You must phone me” not “You must to phone me”.) :no_entry:
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Should (n´t) We often use should to give advice and make suggestions, to tell someone that something is a good idea or not is a good idea.
example:You should tell him what you think. :black_flag:
**afirmative form:Should comes first in the verb phrase (after the subject and before another verb):
I should go home now. :warning:
question form:The subject and should change position to form questions. We don’t use do, does, did: example:Should I turn on the air conditioning? :star:
negative form: The negative form of should is shouldn’t. We don’t use don’t, doesn’t, didn’t with should:
There shouldn’t be many people at the beach today. :check:
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Remember: must is similar with have to, but we use must for obligations more personal. :!: