6 sentences

1. 萤火虫在黑暗中发光。

   yíng​huǒ​chóng zài hēi'àn zhōng fā​guāng.

   Fireflies glow in the dark.

   Source: Dong Chinese Dictionary

2. 你从来没见过萤火虫吗？

   nǐ cóng​lái méi jiàn guo yíng​huǒ​chóng ma?

   You've never seen fireflies before?

   Source: OpenSubtitles

3. ‎你见过萤火虫吗？

   ‎ nǐ jiàn guo yíng​huǒ​chóng ma?

   Have you ever seen fireflies?

   Source: OpenSubtitles

4. 你喜欢萤火虫吗？

   nǐ xǐ​huan yíng​huǒ​chóng ma?

   Do you like fireflies?

   Source: OpenSubtitles

5. 萤火虫不见了。

   yíng​huǒ​chóng bù jiàn le.

   The fireflies are gone.

   Source: OpenSubtitles

6. 夏天的夜晚，草丛里到处都是闪闪发光的萤火虫。

   xià​tiān de yè​wǎn, cǎo​cóng lǐ dào​chù dōu shì shǎn​shǎn fā​guāng de yíng​huǒ​chóng.

   On summer nights, the grass is filled with glowing fireflies.

   Source: Dong Chinese Dictionary