PRESENT SIMPLE + ADVERBS OF FREQUENCY

 
When we use present simple verbs: The adverb of frequency is before the main verb.
                                          I always walk to school.
                                          He doesn't sometimes go to the cinema.
                                          She always plays football.
                                          Do you never eat potatoes?

When we use the verb "to be": The adverb of frequency is after the verb to be.
                                          I am always at home.
                                          He isn't sometimes happy.
                                          Are you often bored?