Sentence Pattern

对不起，我来晚了。（Duìbùqǐ，wǒ lái wǎn le。）：
Sorry. I'm late.

Words
1.哇（wā）：[inter](used to indicated sound of crying)
2.以为（yǐwéi）：[v]to consider
3.惊喜（jīngxǐ）：[n]surprise
4.自行车（zìxíngchē）：[n]bike; bicycle
5.故意（gùyì）：[adv]on purpose
6.擦（cā）：[v]to scrape; to brush

Background
The people are just about to blow out the candles at Lei Mei's birthday party when there is a knock on the door.

Dialogue One

Duìbùqǐ，wǒ lái wǎn le。
对不起，我来晚了。
Sorry. I'm late.

Wā！Wǒ yǐwéi nǐ bú huì lái le！
哇！我以为你不会来了！
Oh, I thought you wouldn't come.

Wǒ xiǎng gěi nǐ yí gè jīngxǐ.
我想给你一个惊喜。
I want to give you a surprise.

Zìxíngchē！Wǒ tài xǐhuan le！
自行车！我太喜欢了！
A bicycle! Thank you!

Background
During the birthday party Li Mei slices the birthday cake, making pieces for everyone. Dachuan carelessly spills wine on Hu Man.

Dialogue Two

Duìbùqǐ，duìbùqǐ，wǒ bú shì gùyì de.
对不起，对不起，我不是故意的。
Sorry, I didn't do that on purpose.

méiguānxi.
没关系。
No worries.

Kuài cāca ba！
快擦擦吧！
Clear it quickly!

Hǎo de，xièxie.
好的，谢谢。
OK. Thanks.