1. 他完成了这个任务。

[ tā wán chéng le zhè gè rèn wù 。 ]

He has completed the task.

2. 他说话的口气像办公室主任似的。

[ tā shuō huà de kǒu qì xiàng bàn gōng shì zhǔ rèn shì de 。 ]

He talks as if he were the head of the office.

3. 他担任着一个责任重大的职务。

[ tā dān rèn zhuó yī gè zé rèn zhòng dà de zhí wù 。 ]

He holds a position of great responsibility upon him.