1. Conjunction:
* "That": This is the most common meaning of "que." It is used to introduce a clause that provides more information about something already mentioned.
* "Who" or "Whom": It can also be used to introduce a relative clause referring to a person.
* "Which": It can be used to introduce a relative clause referring to a thing.
2. Interjection:
* "What!": This is used to express surprise or disbelief.
3. Adverb:
* "How": This is a less common usage, but it can be used to ask how something is done.
Examples:
* "Quiero que me acompañes." (I want you to accompany me.) - "que" introduces a clause.
* "La mujer que me ayudó era muy amable." (The woman who helped me was very kind.) - "que" introduces a relative clause referring to a person.
* "El libro que leí era interesante." (The book which I read was interesting.) - "que" introduces a relative clause referring to a thing.
* "¡Que sorpresa!" (What a surprise!) - "que" is an interjection.
* "Que raro es esto." (How strange this is.) - "que" is an adverb.
It's important to pay attention to the context to understand the exact meaning of "que" in a sentence.