Education English | Grammar : Use of Modals " Could" | Modal auxiliary could used for :
1. Demonstrated ability in the past (past).
He could swim very fast when he was a child
She could sing beautifully ten years ago.
2. Demonstrated ability to be conditional (present).
If he were a teacher, he could teach you now. (Now he is not a teacher)
3. Requests that are smooth
Could you tell me the reason, please ?
Could you lend me your dictionary, please ?
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