the imperative

We can use the imperative to give a direct order.

• 
  Take that chewing gum out of your mouth.
  
• 
  Stand up straight.
  
• 
  Give me the details.
  

We can use the imperative to give instructions.

• 
  Open your book.
  
• 
  Take two tablets every evening.
  
• 
  Take a left and then a right.
  

We can use the imperative to make an invitation.

• 
  Come in and sit down. Make yourself at home.
  
• 
  Please start without me. I'll be there shortly.
  
• 
  Have a piece of this cake. It's delicious.
  

We can use the imperative on signs and notices.

• 
  Push.
  
• 
  Do not use.
  
• 
  Insert one dollar.
  

We can use the imperative to give friendly informal advice.

• 
  Speak to him. Tell him how you feel.
  
• 
  Have a quiet word with her about it.
  
• 
  Don't go. Stay at home and rest up. Get some sleep and recover.
  

We can make the imperative 'more polite' by adding 'do'.

• 
  Do be quiet.
  
• 
  Do come.
  
• 
  Do sit down.