Present simple - přítomný čas prostý

1. Form

2. Use and practice

with words like: USUALLY / ALWAYS / OFTEN / NEVER / SOMETIMES

https://learnenglish.britishcouncil.org/grammar/english-grammar-reference/present-simple

Practice here: 

https://www.perfect-english-grammar.com/present-simple-exercise-7.html

https://www.really-learn-english.com/simple-present-exercises.html?utm_content=cmp-true

https://www.english-4u.de/en/grammar/present-simple.htm

3. Adverbs of frequency - zájmena jak často