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Modal auxiliary. - Coggle Diagram
Modal auxiliary.
The basic structure is:
positive: subject + auxiliary verb + main verb
Ican play tennis.
negative: subject + auxiliary verb + not + main verb
He can not play tennis.
? question: auxiliary verb + subject + main verb
Can you play tennis?
Prepositions of Time at, in, on:
at for a precise time.
• in for month, years, centuries and long periods.
• on for days and dates.
Past
Could is an auxiliary verb, a modal auxiliary verb.
Use of Could
Could: Past Possibility or Ability
Future
The word will is a modal auxiliary verb and future tenses are sometimes called
"modal tenses".
Will=Will you open the door for me?
would=Would you open the door for me? could = Could you please open the door?
Present
Can: talk about possibility and ability
Could: Requests.
May: (to indicate possibility) (to ask permission)
The most common auxiliary verbs are "be," "do," and "have", and you may also use these verbs on their own.
Other common auxiliaries are "can," "could," "may," "might," "must," "ought," "should," "will," and "would."
A verb like these is called a modal auxiliary and expresses necessity, obligation, or possibility