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Modals - Coggle Diagram
Modals
Can
We use can + bare infinitive to talk about general ability in the present and the future, for requests, for permission.
Mike can ride a skateboard, can i go out with my friends tonight? Yes you can go out.
Could
We use could + bare infinitive, to talk about general ability in the past (past form of can), for polite requests
She could play the violin when she was younger, could you please sit down?
May
We use may + bare infinitive for polite requests (with I and we), for polite permission
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Shall
We use shall + bare infinitive for offers, for strong intentions
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Should
We use should + bare infinitive to give advice, to ask for advice
You should go drink some water, should i tidy my room?
Must
We use must + bare infinitive to say that something is necessary, to talk about obligations
You must pay more if you want to stay longer in the hotel, children must wear helmets while driving on bikes.
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Have to
We use have to to say something is necessary, to talk about obligation
You have to do your homework, if you want to play video games, he has to study biology, if he wants to become a veterinarian
Mustn't & don't have to
There is an important difference between mustn't and don't have to. We use mustn't to say that something is not allowed, whereas we use don't have to to show that there is no obligation or necessity
You mustn't hurt your friends, you don't have to believe everything she says.
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