在日常生活中，无论是写信还是发邮件，恰当的问候语都能给对方留下良好的第一印象。以下是一些常用的英语书信问候语和问候语大全，希望能帮助你更好地表达自己的情感。

1. 正式场合

- Dear Sir/Madam,

- Hello/Hi everyone,

- To whom it may concern,

2. 商务邮件

- Good morning/afternoon/evening,

- Dear Mr./Ms. [Last Name],

- Hi [First Name],

3. 朋友间

- Hey [Friend's Name],

- How's it going?

- What's up?

4. 家庭成员

- Hi Mom/Dad/Sister/Brother,

- Hey Grandma/Grandpa,

- Hello Uncle/Aunt,

5. 节日问候

- Merry Christmas and Happy New Year!

- Happy Holidays!

- Wishing you a joyous season!

6. 感谢信

- Thank you for your time and consideration,

- I truly appreciate your help,

- Thanks for everything,

7. 邀请函

- We would be delighted if you could join us,

- Please join us for an evening of fun and celebration,

- Looking forward to seeing you there,

8. 告别语

- Best regards,

- Yours sincerely,

- Take care,

使用这些问候语时，记得根据具体的情境选择合适的表达方式。希望这些建议能帮助你在各种场合中更自信地使用英语进行交流。