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Calla Lily
I'm writing to you or I'm writing you?

Hello there, 
When I write a letter to someone at beginning of paragraph.

Should I use A or B, which expression is the formal sentence?

A I am writing you about your letter
B I am writing to you about your letter

Thank you,

١٠ ديسمبر ٢٠١٦ ١٢:١٢
التعليقات · 3
3

In British English, 'to' would never be omitted in that sentence. Only sentence B is correct in BrE.

In American English, both are correct. Whether one is more formal I don't know, although I'd guess the omission of 'to' would make it less formal.

١٠ ديسمبر ٢٠١٦
1
Paul is correct about these sentences in American English.  His guess is also correct. :)
١١ ديسمبر ٢٠١٦
I am writing to you about the letter you sent me last week.  
I wrote a letter to James that he might come to my house next week to in order to finalize the settlement. 
١١ ديسمبر ٢٠١٦

لا تفوّت فرصة تعلّم لغة جديدة وأنت مرتاح في منزلك. تصفّح مجموعتنا المختارة من مدرّسي اللغات ذوي الخبرة وسجّل في درسك الأول الآن!