present simple

]The simple present expresses an action in the present taking place once, never or several times. It is also used for actions that take place one after another and for actions that are set by a timetable or schedule. The simple present also expresses facts in the present.
uses:
: First, we use the Present Simple when something is generally true. For example
•The sun rises in the east.
Secondly, we need to use this tense for a situation that we think is more or less permanent (see the present continuous for a temporary situation - one which we think won't last long
•She works in a bank
The next use is for habits or things that we do regularly. We often use adverbs of frequency in this case (also see the present continuous for new, temporary or annoying habits.
•I play tennis every Tuesday
Four, we use the Simple Present to talk about what happens in books, plays, or films
•In this book, an army invades Britain
We use it in the first and the zero conditional
Strangely, we can use this tense to talk about the future. When you are discussing a timetable or a fixed plan, you can use this tense. Usually, the timetable is fixed by an organisation, not by us.
•Our train leaves at eleven.
We also use it to talk about the future after words like ' 'when', 'until', 'after', 'before' and 'as soon as' in a future sentence.
•I'm going to make dinner after I watch the news
We need to use this simple tense with some special verbs which we don't use in continuous tenses (stative verbs). Click here for more information about stative verbs.
•You look fabulous.

Everything clear is blue sky