4 sentences

1. 你迟到了一个半小时。

   nǐ chí​dào le yī gè bàn xiǎo​shí.

   You're an hour and a half late.

   Source: OpenSubtitles

2. 已经过去一个半小时了。

   yǐ​jīng guò​qù yī gè bàn xiǎo​shí le.

   One and a half hours have already passed.

   Source: Dong Chinese Dictionary

3. 意大利是一个半岛。

   Yì​dà​lì shì yī gè bàn​dǎo.

   Italy is a peninsula.

   Source: Tatoeba

4. 你一个半小时以前就应该开始了。

   nǐ yī gè bàn xiǎo​shí yǐ​qián jiù yīng​gāi kāi​shǐ le.

   You should've started an hour and a half ago.

   Source: Tatoeba