He talks as if he were the head of the office – 他说话的口气像办公室主任似的

Chinese Sentence: 他说话的口气像办公室主任似的。 
English Translation: He talks as if he were the head of the office.

Simplified Traditional Pinyin Tones English
ta1 he / him
说话 說話 shuo1 hua4 shuō huà to speak / to say / to talk / to gossip / to tell stories / talk / word
de5 de of / structural particle: used before a noun, linking it to preceding possessive or descriptive attributive
口气 口氣 kou3 qi4 kǒu qì tone of voice / the way one speaks / manner of expression / tone
xiang4 xiàng (look) like / similar (to) / appearance / to appear / to seem / image / portrait / resemble / seem
办公室 辦公室 ban4 gong1 shi4 bàn gōng shì office / CL:間|间
主任 主任 zhu3 ren4 zhǔ rèn director / head / CL:個|个
似的 似的 si4 de5 sì de seems as if / rather like / also pr. (shi4 de5) or (shi5 de5)