5 sentences

1. 水和油混不到一块儿。

   shuǐ hé yóu hùn bù​dào yī​kuài​r.

   Oil and water don't mix.

   Source: Dong Chinese Dictionary

2. 我们一块儿去公园吧。

   wǒ​men yī​kuài​r qù gōng​yuán ba.

   Let's go to the park together.

   Source: Dong Chinese Dictionary

3. 平时都是我们坐在一块儿。

   píng​shí dōu shì wǒ​men zuò zài yī​kuài​r.

   We usually sit together.

   Source: OpenSubtitles

4. 改天一块儿喝杯咖啡好吗？

   gǎi​tiān yī​kuài​r hē bēi kā​fēi hǎo ma?

   Would you like to get a cup of coffee sometime?

   Source: OpenSubtitles

5. 我们一块儿去吧。

   wǒ​men yī​kuài​r qù ba.

   Let's go together.

   Source: OpenSubtitles