Adverbs of frecuency

0%                                      50%                                         100%
never     sometimes          often              usually               always

rules:
1. These adverbs usually come before the main verb.

• I usually go to bed at about 11:00
• I don`t often go swimming
• She never eats meat
• We always have winw in the evenings
• I sometimes play tennis on saturdays

2. Sometimes and usually can also come at the beginning or the end of a sentence.

• Sometimes we play cards
• Usually I walk to school
• We play cards sometimes
• I walk to school usually

3. Never and always can`t come at the beginning or the end of  a sentence.