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.

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

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.

I have not eaten anything today.

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

IBGE, the Brazilian Institute of Geography and Statistics, is an important institution. Don't take for granted that your readers know things.

Everyone has seen that movie.

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

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.

If we are late, they will be angry. * Being late is a real possibility, so you should use the first conditional.

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

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