Even If You're Weak at English, You Can Write Business English with AI
Even without confidence in English, with AI you can write English you can send to a client. But "sending the translation as is" is risky. Translation carries meaning but doesn't guarantee whether it's natural as a business document or whether the tone fits your relationship with the recipient. Here's how to write and fix, organized by scene.
How to Ask, by Scene
1. Short Email Reply
Write the gist in Japanese and add the recipient's position and relationship, then ask for a translation.
Make the following into a polite business English email.
Recipient: a US client CEO. Not a first meeting, but keep formality.
[key points in Japanese]2. Proposal/Plan
Translate the Japanese draft → adjust per section:
- First translate the whole structure
- Specify each section as "executive-summary style," "data-focused"
- Confirm jargon translation separately3. Presentation Script
Spoken English differs from written English. Ask for the oral version separately.
Into English speakable in a 5-minute oral presentation.
Output speaker notes and slide text separately.2-Stage Workflow (Rough → Finish)
Combining a translation-specialized tool (like DeepL) with a chat AI is stable.
Stage 1: Rough with a Translation-Specialized Tool
Translate the original meaning accurately. Get jargon and proper nouns right (see this chapter's "DeepL Complete Guide" for DeepL details).
Stage 2: Polish into Business English with AI
Rewrite the following into business English a US professional would write.
- Concise (cut unneeded words)
- Prefer active voice
- Make numbers/data stand out
- Reader assumed to be [CEO / manager]
[rough output]Check the result's grammar/spelling with a resident proofreader like Grammarly (see this chapter's "Grammarly / ProWritingAid" for details).
Standard Phrase Guide
| Japanese | English example |
|---|---|
| ご確認お願いします | Please review and let me know your thoughts. |
| 恐れ入りますが | I would appreciate it if you could… |
| 取り急ぎご連絡まで | I wanted to give you a quick update. |
| 引き続きよろしくお願いします | Looking forward to our continued collaboration. |
Rather than using these as is, have AI fine-tune to the closeness with the recipient for naturalness.
Context to Always Give AI
- The recipient's title, country, relationship to you
- Industry (formality differs)
- Past exchanges (excerpt and provide if any)
- Keywords/numbers you absolutely want to convey
Common Misunderstandings / Patterns to Avoid
- "100% to AI is fine": a human must always confirm proper nouns, amounts, dates
- Sending a literal translation: Japanese-style prefaces can shift tone in English
- One long sentence as is: English communicates better broken short
- Overusing passive voice: business English reads better in active voice
- Pasting confidential as is: check terms for NDA scope/non-public info before passing
4 Final Checks Before Sending
- Check grammar/spelling with a resident proofreading tool
- Back-translate English → Japanese to confirm meaning didn't drift
- Cross-check jargon against a dictionary/in-house glossary
- A human double-checks amounts, dates, proper nouns
Lock meaning with a translation-specialized tool, polish to business tone with AI, check with a resident tool, and have a human verify numbers at the end—with this split, even if you're weak at English, the result holds up in practice. From the next article we look at dedicated tools for minutes, translation, and proofreading in detail.
