Frequency Adverbs

          Adverbs such as : always, already, ever, never, often, rarely, seldom, sometimes, still, usually,
          are placed as follows in sentences :

               ► After the verb BE :                                                              Tom is always late.

               ► Before other verbs :                                             Tom sometimes takes the bus.

               ► Between two verbs :                                            Tom has never travelled on the Eurostar.
                   or after the first verb if there are more than two :     I would never have thought that

                   EXCEPT if the second verb is an infinitive :              Tom often needs to buy petrol

          Frequency Phrases

          Frequency phrases such as : every day, once in a while, etc. go at the beginning or at the end of sentences :

               ► I wash my hair every day.

               ► Once a month I go to the hairdresser's.