Livro English File – Elementar - Lição 3C

used to talk or ask about the number of things or people that are involved or concerned

quantos, quantas

used in questions to ask for information or for someone’s opinion

o que, que

used when we want to ask at what time something happens

quando, em que momento

in what place, situation, or position

onde

used to ask or talk about one or more members of a group of things or people, when we are not sure about it or about them

qual, que

used in questions to ask about the name or identity of one person or several people

quem

used for asking the purpose of or reason for something

por que, por qual motivo