How do you say she went to the library in Cantonese?

There are a few ways to say "she went to the library" in Cantonese, depending on the level of formality and context:

Formal:

* 佢去咗圖書館。 (Kui heui zo tou sou gun.) - This is the most literal translation, using the past tense marker "zo" and "tou sou gun" for library.

* 佢到咗圖書館。 (Kui dou zo tou sou gun.) - This is slightly more formal, using "dou zo" to emphasize the arrival at the library.

Informal:

* 佢去圖書館。 (Kui heui tou sou gun.) - This is the most casual way to say it, omitting the past tense marker.

Using the verb "read":

* 佢去圖書館睇書。 (Kui heui tou sou gun tai syu.) - This means "she went to the library to read books".

You can also use different pronouns depending on the relationship between the speaker and the listener. For example, you could use "佢" (Kui) for someone you're not close with, "佢哋" (Kui dei) for a group of people, or "你" (Nei) for someone you're talking directly to.

It's important to remember that the best way to say something in Cantonese depends on the specific situation. If you're unsure, it's always a good idea to ask a Cantonese speaker for help.