英文文法問題-come from Hong Kong

Formal writing part1
Hello, my name is Peter.
OR
Hello, I am Peter.part2
Q: Where are you from? A: I am from HK.
OR
Q: Where do you come from? A: I come from HK.Most Informal speech
Hello, Peter, from Hong Kong. (用適合語氣)"Hello, I am Peter come from Hong Kong." 這句在文法上有錯處嗎? Yes
-Two verbs in a clause.
Use: "Hello, I am Peter from Hong Kong." instead of it.1: Writing 不可, 不要以為是: Hello, I am Peter who come from Hong Kong. Can't omit this "who". Speaking 可語氣補足.
2: 如上. Formal要依足grammar, Informal Speech按場合可語氣補足,但不代表全不依grammar.

Hello, I am peter come from Hong Kong.

" come from "= 來自..........

[ come from Hong Kong ]是一participle phrase. 在此句"come"不是動詞.

是一分詞短語, 去修飾 : 我是 [ 來自香港 ] 的彼得.

你的句子本身意思很簡單，表達的是自己的名字和自己來自何方。在溝通的層面可以比較有個清晰的處理，因為一句完整句子，表達兩個重點，對方未必知道你真正是如何自我介紹的。你可以把一個重點放在一句，二個重點就造兩句，然後把兩句按輕重先後次序連接起來。即是：I am Peter and I come from Hong Kong.ORI come from Hong Kong and I am Peter.更理想的表達可能是：Hello, this is Peter, I'm from Hong Kong.會是比較口語化和生活化的英語。

This is also good ...

I am Peter from Hong Kong.

錯,留左連接詞
正確是
Hello, I am Peter and i come from Hong Kong