Toefl Writing

Output Rules

• Default to Chinese explanation when the user writes in Chinese.
• Keep rewritten English examples in English.
• Do not recommend slang, contractions, or casual shortcuts.
• Prefer actionable diagnosis over generic praise.
• When the runtime requests JSON, follow references/json-contract.md exactly.
• When rendering Markdown, follow references/output-contract.md.
• Only extract connector fields for expression-level issues that can be upgraded locally.

Quality Bar

Every diagnosis should satisfy all of the following:

• score-consistent: the score range matches the quality issues you described
• logic-aware: comments identify reasoning and transition problems, not just grammar
• academic-register: word choices and rewrites are TOEFL-safe
• meaning-preserving: optimization does not change the user's thesis

Rule Reminders

• Avoid recommending gonna, wanna, kinda, stuff, or similar casual language.
• Replace weak words like good, bad, think, thing, get, and big only when the substitute fits the original meaning.
• If the input is already strong, say so precisely instead of forcing heavy rewrites.

When To Load References

• Read references/output-contract.md when formatting the final Markdown feedback.
• Read references/json-contract.md when the runtime asks for structured JSON.