Subject Particle が

が marks the subject of a sentence — the person or thing performing the action or being described.

🧠 When to Use が:

1. When introducing new information

→ が emphasizes who or what did something, especially when it’s new to the listener.

• 田中さんが優勝しました。(Tanaka won the championship.)

This sentence structure emphasizes that it was Tanaka (not someone else) who won. The speaker knows the listener is aware someone won but doesn’t know it was Tanaka.

2. Used with question words like だれ (who), 何 (what)

Question words like だれ (who), どれ (which), and 何 (what) must use が rather than は:

• 誰がこの絵を描きましたか。(Who drew this picture?)
• ✗ 誰はこの絵を描きましたか。(Incorrect)

3. Used in answers to questions with question words

When answering a question with a question word as the subject, the answer also uses が:

• どの料理が一番美味しいですか。(Which dish is the most delicious?)
• カレーが一番美味しいです。(Curry is the most delicious.)

💡 が vs は – What’s the Difference?

For example:

• 犬は庭で遊んでいます。(As for the dog, it’s playing in the garden.) Here, the dog is already the topic of conversation.
• 犬が庭で遊んでいます。(It’s a dog that’s playing in the garden.) Here, the fact that it’s a dog (not another animal) is the new information.

💡 Quick Notes for Whoever is learning

• When you’re unsure, ask yourself: Am I introducing something new or answering a question?
  If yes, try using が!
  Also, remember: が = spotlight. It highlights what’s important right now in the sentence!

• Don’t stress too much about the が vs は battle. They both come up a lot, and the more you listen and read, the more it will feel natural over time. Good luck 🐳!

🌟 Motivation for You 🌟

“Every particle you learn is like a puzzle piece. It may feel confusing at first, but piece by piece, you’re building the full picture — and you’re doing great!”

“Even native speakers once started from zero. Keep going, one が at a time — you’re making real progress!”