Auxiliary verb - IX std

Auxiliary verb

Auxiliary verbs are also called helping verbs.

• Primary auxiliary 
• Modal auxiliary 

Primary auxiliary 

1. Be verbs - am, is, was, are, were. 
2. Do verbs - do, does, did
3. Have verbs - has, have, had

Modal auxiliary 

1.Can - Could

• Ability 
• Permission 
• Possibility 

Eg: Can I use your mobile please? 

       It could rain tomorrow. 2.May - Might

• Permission 
• Possibility 

Eg: May I come in? 

       I might go on holiday to Australia nextyear. 3.Shall - Should 

• 50% obligation
• Advice
• Logical conclusion 

Eg: You should revise your lessons.

4.Will - Would 

• Desire or Wish
• Preference 
• Choice

Eg: I will take this duty. 

       I would rather go shopping today. 5.Must

• Strong obligation 
• Logical conclusion 
• Certainty

Eg: You must stop when the traffic lights turn red. 

Semi modals

Need, dare, used to, ought to.