✨ Basic Meaning
🎯 Primary Function
📋 Grammar Structure
🎭 Usage Contexts
Used with です/ます form: ことがあります/がありません. Appropriate for polite conversation and interviews.
Used with the plain form: ことがある/がない. Common among friends and family.
Appears in essays, letters, and narratives, particularly when describing habits or personal histories.
Very common in conversation, especially when asking or telling stories about past experiences.
💡 Common Applications
📌 Important Points
⚠️ Common Mistakes
🏛️ Cultural Context
🔍 Subtle Differences
📝 Conjugation Notes
Always attach the structure to the plain form of the preceding verb (either V-た for experience or V-る for occasionality). Never attach it to the ます-stem.
🔊 Pronunciation Tips
The particle が (ga) is always pronounced clearly. The word こと (koto) has a standard, flat pitch (L-H).
🧠 Memory Tips
Think of こと (koto) as “the matter/instance” and ある (aru) as “to exist.” The pattern literally means “the instance of [verb] exists.” (V-ta koto ga aru = The instance of having done V exists.)
I’m a software engineer based in Japan, with experience in developing web and mobile applications. I’m passionate about technology, especially in DevOps, AI, and app development using platforms like AWS, Flutter, and Node.js. My goal is to build a website that shares knowledge about the Japanese language and IT, helping everyone learn and grow more easily in the digital era.