Regular –er verbs

to learn

 

to drink

 

to eat

 

to understand

 

to run

 

to believe

 

to read

 

to put

 

to promise

 

to sell

 

to see

 

 

 

 

 

Stem Change –er verbs

 

to defend

 

to understand

 

to lose

 

to want

 

to return, give back

 

to wrap

 

to be able

 

to return

 

to have