5 sentences

1. 你知道大卫在哪里吗？

   nǐ zhī​dào Dà​wèi zài nǎ​lǐ ma?

   Do you know where David is?

   Source: OpenSubtitles

2. 你为什么要杀大卫？

   nǐ wèi​shén​me yào shā Dà​wèi?

   Why did you kill David?

   Source: OpenSubtitles

3. 大卫是我的好朋友。

   Dà​wèi shì wǒ de hǎo péng​you.

   David is a good friend of mine.

   Source: Dong Chinese Dictionary

4. 我知道你所有的秘密，，大卫。

   wǒ zhī​dào nǐ suǒ​yǒu de mì​mì,, Dà​wèi.

   I know all your secrets, David.

   Source: OpenSubtitles

5. ‎大卫怎么来了？

   ‎ Dà​wèi zěn​me lái le?

   Why's David here?

   Source: OpenSubtitles