3 sentences

1. 听完这个笑话，大家都放声大笑。

   tīng wán zhè​gè xiào​hua, dà​jiā dōu fàng​shēng dà​xiào.

   After hearing the joke, everyone burst out laughing.

   Source: Dong Chinese Dictionary

2. 那孩子因为受了委屈而放声大嚎。

   nà hái​zi yīn​wèi shòu le wěi​qu ér fàng​shēng dà háo.

   The child wailed loudly because he felt wronged.

   Source: Dong Chinese Dictionary

3. 他在亲人的灵堂前放声大号，哭声十分凄惨。

   tā zài qīn​rén de líng​táng qián fàng​shēng dà​hào, kū​shēng shí​fēn qī​cǎn.

   He wailed loudly in front of his relative's mourning hall, and his crying was truly heartrending.

   Source: Dong Chinese Dictionary