In a question, is the Ga particle always used or does it switch between Ha and Ga?

Thank you guys!!!

It's hard to put in to words, but basically what they said. が places enphasis on the subject. Here are some more examples.

私はアニメが大好きです！　　I love anime!

あの人は目が大きいです。　　That person has big eyes.

日本に行きたいですが、お金がない。　　I want to go to Japan, but I don't have any money.

が can also be used as 'but' or 'however' as shown in the last example. Hope this helped!

"Ga" is used when stating a second subject. I call the second subject particle.

E.g.

私はりょうりができます。

Translation:

I can do cooking/ I am able to cook.

Ohh okay. So "ga" is only used when you want to talk about what the subject is about?