在英文邮件中委婉询问进展，可以使用以下几种方式：

1. 使用礼貌的问候和语气：

```

Dear [Name],

I hope this email finds you well. I was wondering if you could provide an update on the progress of [specific project or task]. Your timely updates are greatly appreciated.

Best regards,

[Your Name]

```

2. 表达对对方的关心和感谢：

```

Dear [Name],

I hope you are doing well. I wanted to check in and see if there has been any progress on [specific project or task]. Your hard work on this has not gone unnoticed, and I'm eager to hear about the latest developments.

Thank you for your continued efforts.

Warm regards,

[Your Name]

```

3. 提出具体问题，表达对进展的关注：

```

Dear [Name],

I hope you are doing well. I'm writing to inquire about the progress of [specific project or task]. It's important for us to stay on track, so I would greatly appreciate any updates you can provide.

Could you please let me know the current status and any upcoming milestones?

Thank you for your attention to this matter.

Best regards,

[Your Name]

```

4. 询问对方是否需要帮助：

```

Dear [Name],

I hope you are doing well. I wanted to check in on the progress of [specific project or task]. It's crucial for us to stay informed about the developments, and I believe your expertise is essential in this matter.

If you need any assistance or if there's anything I can do to help, please let me know.

Looking forward to hearing from you soon.

Best regards,

[Your Name]

```

5. 使用简洁的语气，避免过于紧迫：

```

Dear [Name],

I hope everything is going well. Just wanted to touch base and see if there's any news on [specific project or task]. I'll be happy to provide any additional information or support if needed.

Thank you for your attention to this.

Best regards,

[Your Name]

```

根据具体情况和与收件人的关系，选择合适的方式表达你的询问。