請大家幫我看看這段有什麼文法跟片語 謝謝?

The DO is followed by a past participle in Grammar:-
verb is a word or phrase indicating what somebody or something does, what state somebody or something is in, what is becoming of something or somebody.eg:-Pollock "accompanied and laid" the Burma pipe.----accompanied and laid are the verbs in the sentence.
verbal of verb is a verbal noun;eg:-"Working" in the steep mountains,Pollock dropped to the valley below 1.2km. "working" in the sentence is a verbal.There are two verbal adv.cl inserted to the subject"Pollock's team:-eg:-(1)where they laid the pipe in the jungle during the monsoon season.(2)working on steep mountainsides with sheer drops of 1.2km to the valley below;which is also a participle construction as complement.
Hence the TW style sentence construction might be :-
eg:-
It was led by======-S+vt(main verb)---passive
S.Sgt======DO=direct object.
accompanied======past participle;===be accompanied;passive voice;verbal
laid========past participle;passive voice;verbal
working========.;gerund;present participle;verbal;not auxiliary;active voice.
eg:-Hence:-TW style:-A working team worked on EPD being assigned/activated.

One unit on this special assignment was the U.S.Army 779th EPD(Engineering Petroleum Distribution) Company, activated in September, 1943. It was led by S. Sgt. George Pollock, S. Sgt. Pollock accompanied his men from Burma, where they laid the pipe in the jungle during the monsoon season, to the Himalaya Mountains in China, working on steep mountainsides with sheer drops of 1.2 km to the valley below.
美國陸軍第779石油配置工程公司是在這特別任務上被啟動於1943年9月的一個單位，它是由喬治．波洛克中士所領導，波洛克中士在印度雨季時，伴同他的人手在從緬甸至中國喜瑪拉雅山區叢林中鋪設石油管道，並在這有著急落直下1.2公里至山谷的陡峭山坡上工作。

此段文字基本上沒有什麼片語及特殊文法，只是有使用插句", where they laid the pipe in the jungle during the monsoon season," 在文字段落中間插入，以補充說明。而working on steep mountainsides with sheer drops of 1.2 km to the valley below則是分詞構句也是用於補充說明。

One unit on this special assignment was the U.S.Army 779th EPD(Engineering Petroleum Distribution) Company, activated in September, 1943. It was led by S. Sgt. George Pollock, S. Sgt. Pollock accompanied his men from Burma, where they laid the pipe in the jungle during the monsoon season, to the Himalaya Mountains in China, working on steep mountainsides with sheer drops of 1.2 km to the valley below.
在一九四三年九月美國曾經被邀請派遣壹單位美軍七七九石油公司工程部隊;當時是由上士喬治鮑洛, 中士鮑洛率領緬甸人員. 當時是適逢雨季,他們在中國邊境喜瑪拉雅山區森林內安置水管工程,該處地勢形峻峭有十二公里的陡落的深谷. Yip