Can - to use to talk about ability in the present. I 'can' walk now. , Could - to talk about ability in the past. I 'could' walk since I was three years old. , Be able to - to talk about ability in the present, past or future. Finally, I 'am able to' walk outside today., Can or May or Could - asking for permission. 'May' I go to the toilet?, Can or Be allowed to - permission in the present and the future. I 'can' go to that shop tomorrow, don't worry., Could or Was(singular) / Were(plural) allowed - general permission. She 'was' allowed to stay there., Was(singular) / Were(plural) allowed - permission on a specific event. She 'was allowed' to stay there that evening. , Can, Could, Will or Would - to ask for something. 'Could' you please pass me the book?, Can, Could, Shall I or Would you like me to...? - to offer something. 'Shall' I pour you a class of water?, Can/Could - ask for suggestion. 'Could' you please advice me on what to do with this extra money?,

Modal Verbs

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In
Nhúng

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