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Modal Verbs
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What is the past form of must?
had to
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What do we use can, could, will and would for?
to ask a favour or make a polite request
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What modals do we use for asking, giving and refusing permission?
Can, could,may
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What does the verb must mean in a negative statement?
prohibition
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What are 3 common rules for all modal verbs
same in all persons, followed by to+infinitive, form negative and question with no auxiliary
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Make a negative sentence using 'need to' as a modal verb
...
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What verb do we use if we speak about absence of obligation?
Don't have to
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Make a negative sentence using 'need to' as the main verb
...
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Make a sentence with a modal verb to offer help
...
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Are must and have to similar? In what case?
Yes, in affirmative statements
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What is the difference between can and could?
Could is more polite
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What does the verb must mean in an affirmative statement?
obligation
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What is the difference between need to as the main and modal verb?
It doesn't need an auxiliary and is followed by bare infinitive
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