Could VS Would
https://www.youtube.com/watch?v=mU9lY1HF5Mc 1 . Past 2. A. Possible situation - could 2. B. Imaginary situation - would,could 3 .Polite Expressions A. Making suggestion - Could B. Making offers - Would you like some tea ? C. Making Request - Could, Would you mind D. Asking for Permission - Would,could ,Would you mind