Prepositions .

I have a problem with prepositions, in my native language ( Portuguese ) we always use prepositions and in English not . It's hard for me to know when I  need to use them in English.

Hello Marcos,

First of all don't worry, many students have trouble with prepositions. Some prepositions are functional prepositions - prepositions of time (at six o'clock), some are prepositions of place (in the middle and some are prepositions of movement ( to the station)

There is a big list here https://en.wikipedia.org/wiki/List_of_English_prepositions

But a lot of prepositions are connected to verbs (listen to, go to, get up sit down ....) If you learn the preposition with the verb it will be much easier. It is just as easy for your brain to remember 2 or 3 words as it is one.

Hope this helps

Bob