3 sentences

1. 你母亲止不住地哭。

   nǐ mǔ​qīn zhǐ​bu​zhù de kū.

   Your mother couldn't stop crying.

   Source: OpenSubtitles

2. 我们止不住哭泣。

   wǒ​men zhǐ​bu​zhù kū​qì.

   We couldn't keep from crying.

   Source: Tatoeba

3. 我止不住打喷嚏。

   wǒ zhǐ​bu​zhù dǎ pēn​tì.

   I can't stop sneezing.

   Source: Tatoeba