4 sentences

1. 请对着麦克风说话。

   qǐng duì​zhe mài​kè​fēng shuō​huà.

   Please speak into the microphone.

   Source: Dong Chinese Dictionary

2. 蛋糕里有个麦克风！

   dàn​gāo lǐ yǒu gè mài​kè​fēng!

   There's a microphone in the cake!

   Source: OpenSubtitles

3. 我没带麦克风。

   wǒ méi dài mài​kè​fēng.

   I didn't bring a microphone.

   Source: OpenSubtitles

4. 他是个典型的麦霸，只要进了KTV就不肯放下麦克风。

   tā shì gè diǎn​xíng de mài​bà, zhǐ​yào jìn leKTV jiù bù kěn fàng​xià mài​kè​fēng.

   He's a typical mic hog; once he's in a KTV room, he won't let go of the microphone.

   Source: Dong Chinese Dictionary