Question

what is the use of could of modal verbs?

Answer 1

Heya....
Here's your answer......

It's the past tense of can.It refers to the ability of the person that he / she had in past or something that was generally possible in the past.
example - When I was younger, I could run for miles.

Hope it will help you

Answer 2

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Modals :

=> Modal is depend on verb and always before modal verb is used.

=> Modals also known as Auxiliary or helping verb.

=> Structure :

Subject + modal + verb first form + object

Uses of Could :

=> Could is used for Ability, capacity and power in past tense.

=> Structure :

Subject + could + Verb first form + object, when + subject + was/were + Noun/pronoun

Example :

• I could Play well, when I was young
• I could do 100 push-ups in 15 minutes, when I was 15 years old.

=> Could is used for Possibility in past and unreal situation used for could

Example :

• she could have became a doctor.
• I could have taught you textbook

=> Could is used for polite request

Example :

• Could you tell me way of hotel?
• Could you help me?

=> Could is used for Narration of indirect speech

Example :

• He said that he could make it.