根据美国探亲邀请函的写作规范，邀请函需包含被邀请人信息、访问目的、费用说明及邀请人信息等核心内容。以下是具体要点及模板示例：
一、基本结构
称呼与开头
- 邀请函开头需明确称呼（如"Dear Consular Officer"或"Dear [被邀请人姓名]"），并说明写信目的。
被邀请人信息
- 包含姓名、性别、出生日期、护照号码等基本信息，以及与邀请人的关系（如父母、配偶等）。
访问目的与时间
- 明确说明访问目的（如探亲、团聚），并注明预计抵达和离境日期。
费用说明
- 说明费用承担方式，如机票自理、食宿由邀请人提供，或涵盖交通、住宿等费用。
邀请人信息
- 提供邀请人姓名、住址、联系方式及身份证明文件（如身份证复印件）。
二、模板示例
以下是综合权威信息的邀请函模板，供参考：
模板一：通用探亲邀请函
```
Dear Consular Officer,
My name is [Your Full Name], and I am a [Your Nationality] residing at [Your Address].
I am writing to invite my [Spouse/Father/Mother] [Name] to visit us in the United States for a period of [Duration] starting on [Date] and ending on [Date].
We will cover all expenses related to their stay, including airfare, accommodation, and medical insurance.
Please find attached proof of my employment and accommodation.
Sincerely,
[Your Signature]
[Your Full Name]
[Your Contact Information]
```
模板二：具体亲属探亲邀请函
```
Dear Sir/Madam,
My name is [Your Full Name], and I am currently working as [Your Position] at [Company Name].
I am writing to invite my [Father/Mother] [Name] to visit us in the United States for [Duration] from [Date] to [Date].
We will provide full financial support for their stay, including international travel and local expenses.
Please find attached my employment verification and accommodation details.
Sincerely,
[Your Signature]
[Your Full Name]
[Your Contact Information]
```
三、注意事项
语言规范
- 使用正式、简洁的语言，避免口语化表达。
附件要求
- 需附上邀请人身份证明（如身份证复印件）、工作证明及住宿安排文件。
时效性
- 确保邀请函中的日期与实际计划一致，避免因信息变动影响签证申请。
通过以上模板和要点，可规范撰写符合美国探亲签证要求的邀请函。建议根据具体亲属关系调整内容，并提前咨询使领馆确认格式要求。
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