Modals - English Grammar
1) can
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Use 
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Examples 
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ability to do sth. in the
  present (substitute form: to be able to) 
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I can speak English. 
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permission to do sth. in the
  present (substitute form: to be allowed to) 
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Can I go to the cinema? 
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request 
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Can you wait a moment, please? 
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offer 
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I can lend you my
  car till tomorrow. 
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suggestion 
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Can we visit Grandma
  at the weekend? 
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possibility 
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It can get very hot in Arizona. 
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2) could
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Use 
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Examples 
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ability to do sth. in the
  past (substitute form: to be able to) 
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I could speak English. 
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permission to do sth. in the
  past (substitute form: to be allowed to) 
 | 
  
   
I could go to the cinema. 
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polite question * 
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Could I go to the cinema, please? 
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polite request * 
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Could you wait a moment, please? 
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polite offer * 
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I could lend you my
  car till tomorrow. 
 | 
 
| 
   
polite suggestion * 
 | 
  
   
Could we visit Grandma
  at the weekend? 
 | 
 
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possibility * 
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It could get very hot in Montana. 
 | 
 
3) may
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Use 
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Examples 
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possibility 
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It may rain today. 
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permission to do sth. in the
  present (substitute form: to be allowed to) 
 | 
  
   
May I go to the cinema? 
 | 
 
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polite suggestion 
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May I help you? 
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4) might
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Use 
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Examples 
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possibility (less possible
  than may) * 
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It might rain today. 
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hesitant offer * 
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Might I help you? 
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5) must
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Use 
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Examples 
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force, necessity 
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I must go to the supermarket today. 
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possibility 
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You must be tired. 
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advice, recommendation 
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You must see the new film with Brad
  Pitt. 
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6) must not/may not
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Use 
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Examples 
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prohibition 
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You mustn't work on dad's computer. 
You may not work on dad's computer.  | 
 
7) need not
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Use 
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Examples 
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not necessary 
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I needn't go to the supermarket, we're
  going to the restaurant tonight. 
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8) ought to
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Use 
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Examples 
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advice 
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You ought to drive carefully in bad weather. 
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obligation 
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You ought to switch off the light when you leave the room. 
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9) shall
1.    instead of will in the 1st
person
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Use 
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Examples 
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suggestion 
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Shall I carry your bag? 
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10) should
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Use 
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Examples 
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advice 
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You should drive carefully
  in bad weather. 
 | 
 
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obligation 
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You should switch off the
  light when you leave the room. 
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11) will
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Use 
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Examples 
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wish, request, demand, order
  (less polite than would) 
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Will you please shut the door? 
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prediction, assumption 
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I think it will rain on Friday. 
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promise 
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I will stop smoking. 
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spontaneous decision 
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Can somebody drive me to the
  station? - I will. 
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habits 
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She's strange, she'll sit for hours without talking. 
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12) would
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Use 
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Examples 
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wish, request (more polite
  than will) 
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Would you shut the door, please? 
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habits in the past 
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Sometimes he would bring me some flowers. 
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