✨ Basic Meaning
🎯 Primary Function
📋 Grammar Structure
🎭 Usage Contexts
Can be used in formal writing or speeches to add emotional impact.
Commonly used in everyday speech and writing to express strong personal feelings.
Used in essays, novels, letters, and emotional accounts.
Frequently heard in conversations when expressing surprise, gratitude, or difficulty.
💡 Common Applications
📌 Important Points
⚠️ Common Mistakes
🏛️ Cultural Context
🔍 Subtle Differences
📝 Conjugation Notes
Verbs: Plain form (dictionary form, ない form, た form, なかった form) い-adjectives: Plain form (e.g., 美しいことか, 嬉しかったことか) な-adjectives: な + ことか (e.g., 静かなことか, 大変だったことか) Nouns: である + ことか (less common, e.g., 医者であることか). Sometimes な + ことか can be used informally with noun phrases.
🔊 Pronunciation Tips
The particle か at the end indicates the rhetorical nature and often has a rising intonation, though not always. The preceding phrase before ことか carries the main emotional emphasis.
🧠 Memory Tips
Think of “How much…!” or “How…!” as the core meaning. Associate ことか with words of degree like どんなに or どれほど.

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.