3 sentences

1. 他是这家公司的董事长。

   tā shì zhè jiā gōng​sī de dǒng​shì​zhǎng.

   He is the chairman of this company.

   Source: Dong Chinese Dictionary

2. 董事长亲临现场指导工作。

   dǒng​shì​zhǎng qīn​lín xiàn​chǎng zhǐ​dǎo gōng​zuò.

   The chairman visited the site in person to guide the work.

   Source: Dong Chinese Dictionary

3. 董事长非常重用这位年轻的经理。

   dǒng​shì​zhǎng fēi​cháng zhòng​yòng zhèi wèi nián​qīng de jīng​lǐ.

   The chairman places great trust in this young manager.

   Source: Dong Chinese Dictionary