3 sentences

1. 全家的重担都落在他的肩头。

   quán jiā de zhòng​dàn dōu luò zài tā de jiān​tóu.

   The burden of the entire family falls on his shoulders.

   Source: Dong Chinese Dictionary

2. 他一个人挑起了家庭的重担。

   tā yī gè rén tiāo​qǐ le jiā​tíng de zhòng​dàn.

   He shouldered the heavy burden of the family all by himself.

   Source: Dong Chinese Dictionary

3. 他独自肩起了养家糊口的重担。

   tā dú​zì jiān​qǐ le yǎng​jiā​hú​kǒu de zhòng​dàn.

   He shouldered the burden of supporting his family alone.

   Source: Dong Chinese Dictionary