2 sentences

1. 你没这个胆子。

   nǐ méi zhè​ge dǎn​zi.

   You don't have the guts.

   Source: OpenSubtitles

2. 你有没有胆子？

   nǐ yǒu​méi​yǒu dǎn​zi?

   Do you have the guts?

   Source: OpenSubtitles