3 sentences for 本 (běn — capital)

1. 这桩买卖让他折了本。

   zhè zhuāng mǎi​mai ràng tā shé le běn.

   This deal made him lose his capital.

   Source: Dong Chinese Dictionary

2. 这笔生意赔了本。

   zhè bǐ shēng​yi péi le běn.

   This business deal lost money.

   Source: Dong Chinese Dictionary

3. 这桩生意做下来，咱们可是蚀了本。

   zhè zhuāng shēng​yi zuò xià​lai, zán​men kě​shì shí le běn.

   We ended up losing money on this business deal.

   Source: Dong Chinese Dictionary