一.如何打招呼

通用版:

1.How are you?

2.How are you doing?

3.How you doing?

4.How's it going?

4.How's everything going?

好久沒見的朋友：

It's been a while. How've you been? 好久不見。最近怎么樣

It's been a long time. What have you been up to? 好久不見。最近忙什么呢？

Long time no see. How are things treating you? 好久不見，過的怎么樣？

熟人，非常不正式的場合，年輕人之間：

Hey, what's up?

Hey, what's going on?

回答時不用形容詞 good/bad等詞回答。

二.別人說thank you時該如何回答。

通用版:

1.You're welcome.

2.No problem.

3.No worries.

4.Don't worry about it. It's no biggie.

5.No sweat.

最好只在熟人之間用：

1.Sure.

2.Yeah.

三.別人說sorry時該如何回答。

通用版:

1.It's okay.

2.It's alright.

3.No problem.

4.No worries.

5.Don't worry about it.

6.Nah, it's no big deal.

7.No sweat.

最好只在熟人之間用:

Sure.

當然還有其他表達方法，但是這些是相對而言用的頻率最高的一些。