呢兩句英文有冇錯野?

1. 錯
I did not stay in Hong Kong for my first Christmas.
如果你意思是你出生的第一個聖誕不是在香港過的。例如你是在外過出世。由於你的first christmas必定是以前的事，所以一定是past tense造句。這原句不單文法錯(沒有verb)，句子意思有點怪。

2. Your introduction and advice are XXXX.
用are因為introuction和advice是兩樣東西，英文文法很守規則的a and b就必定當是兩件東西的眾數，無論你認為他們是否同時同地或同等出現。
xxxx用nice有點不妥，因為introduction(序言/前言)和advice(意見/建議)不會用nice(良好/漂亮/美好)這些形容人性格的詞。可以用good, well presented, coherent, useful...

我推薦您一個非常不錯的英語學習網站，里面有很多非常不錯的學習資源：

http://www.hkenglishstudy.info

希望可以幫到你!

錯
my first Christmas not staying in Hong Kong.
I didn't stay in Hong Kong for my first Christmas.

錯
your introduction and advice is nice.
your introduction and advice are nice. 因為有兩樣野。

1) This is the first Christmas I do not stay in Hongkong.

or

I do not stay in Hongkong for the first time during Christmas.

2) Your introduction and advice are nice.

1. 錯
改正：My first Christmas is not staying in Hong Kong.
2. 錯
用are

1) It is my first Christmas that I'm away from Hong Kong.
2) Your introduction and advice are nice.
* plural "are" is used b'coz introduction+advice = 2 nouns