Auxiliary Verbs

1. Auxiliary=help

• Auxiliary verbs are "helping" verbs

2.  Types

• Modals
• should, may, must, can, could, might, would, shall, *ought to (should), will, had better,
• They never change!
• Form: 
• modal + base verb (no "to"!!!!)
• modal + have + -ed (past participle)
• Example
• Students must do their Homework every day.
• He can't sleep in the class.
• He might have stayed up late.
• Other Auxiliary Verbs
• Present Progressive
• be + -ing
• He is sleeping.
• Present Perfect
•  have/has + past participle
• I have been to Bozeman.  She has tried calamari.
• Present Perfect Progressive
•  have/has + been+ -ing
• I have been doing my HW today.
• Passive
• be + past participle
• The book was written in less than one month.  
• Others????
• There are many more!