My father thinks I should stop smoking. * In this sentence, the verb think is a state verb. It is generally not used in the progressive (~ing) tense.

Use a comma before and when adding three items or more.

It was raining when I got home last night. * Use past progressive for a longer action that was interrupted by a shorter action in the past.

He is not really nice-looking, and yet he has enormous charm. Use a comma before any coordinating conjunction connecting two independent clauses.

The teachers* We use "the" when talking about a specific group.

I fell asleep while I was watching TV. *After while use past progressive.

There are twenty-two students. We commonly used there is/are to express existence.

Don't use THE when talking about things in general.

I have not eaten anything today.

My sister is being annoying today, but usually she is nice. (We use progressive tenses for actions that are temporary)

Everyone has seen that movie.

You don't need commas if "and" is used to indicate addition.

If I were a child, I would play outside. * Second conditional = If + past tense, subject + would/could/might. The second conditional is used for unreal cases.