同美國人交談

不管英國或美國, 都是錯的,
1.me is a good boy
應是: I am a good boy 或 I am a nice guy.

2.me is Americans
應是: I am American 或 I am an American.

沒有 me is 這 version in English.
Me = 我. 如你查字典, 你會見到 me 是受格(詞)的<我>, 例: John is smarter than me.

hi... never say that. Americans also must not say that too. you should say ...
1. I am a good boy
2. I am an American
hope it can help.

美國人唔會咁講me is
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_6.gif

e.g.
1.me is a good boy
1. I am a good boy.我係一個乖的孩子.

2.me is Americans
2. I am American.我係美國人. 一個人唔需要(+)s.
使用me:
The objective case of I, used as a direct or indirect object: They asked me to the party. Give me your hand.
Who's there? ans: "It's me."( informal口語)
I hope this can help you!

如果係想同美國人交談但又唔係好識英文, 你可以講 :

How are you? I am xxx(你個名) from Hong Kong. May I know you?

意思係

你好嗎? 我是在香港的xxx, 我可以認識你嗎?

me is good boy 同 me is Amercans 都文法上唔o岩

應該係

1. I am a good boy.
2. Are you American?

I think you indroduce your self like this way:
I am a good guy(maybe you can use boy,but accturally they did not use
boy= =
I am a American ,but from China.
etc.