Untitled

• Modal verbs are very important in English
• Modal verbs


  Help when speaking about ability, making requests and offers, asking permission, and more<|>Give additional information about the function of the main verb that follows it<|>Have a great variety of communicative functions
• Using modals to express prohibition, obligation, and permission

  1. Prohibition

  2. Obligation

  3. Permission
• Prohibition


  Preventing, forbidding, stopping, or disallowing someone from doing something
• Can't/cannot


  Expresses prohibition, usually gives the idea of something that is against the rules or policy
• Mustn't/must not


  Expresses prohibition, usually means that it is the speaker who is setting the rule
• Obligation


  A duty or commitment
• Have to


  Expresses obligation that comes from someone else, not the speaker, usually referring to a rule or law
• Must


  Expresses obligation that comes from the speaker
• Don't have to


  Expresses that there is no obligation, you can do something if you want but it is not a requirement
• Permission


  Allowing someone to do something
• Can


  Most often used to ask for or give permission
• Could


  Can also be used to ask for permission, but not as often as 'can'
• Prohibition


  • Passengers must not play music or talk on this part of the train
  • You can't rent a car without a credit card
• Obligation


  • You have to show your ID before you can enter the place
  • I must stand in all requirements before Friday
• Permission


  • You can sit here, the seat is free