Question

tell the rule of simple present tense

Answer 1

. For repeated or regular actions in the present time period.I take the train to the office.The train to Berlin leaves every hour.John sleeps eight hours every night during the week.2. For facts.The President of The USA lives in The White House.A dog has four legs.We come from Switzerland.3. For habits.I get up early every day.Carol brushes her teeth twice a day.They travel to their country house every weekend.4. For things that are always / generally true.It rains a lot in winter.The Queen of England lives in Buckingham Palace.They speak English at work.

Answer 2

The simple present is used:
to give your opinion - I like ice cream. I don't like spicy food.to talk about schedules - The library opens at eight. It doesn't open at 7.to talk about daily habits (routine actions)- Sara eats a cheese for breakfast every day. She doesn't eat cereal.to give facts - The earth circles the sun. The moon doesn't circle the sun.