A conjunction, also called a connecting word, is a word used to connect words, phrases, clauses and sentences.


O livro e a caneta estão na mesa. The book and the pen are on the table.
Eu acho que ele está doente. I think that he is sick.
Você prefere café ou chá? Do you prefer coffee or tea?

Remark: In Portuguese the conjunction que (that) is more frequently used than in English.

In sentences like Ele acha/sabe/disse que…. (He thinks/knows/said that….) the conjunction que (that) cannot be omitted.