找謂語動詞（began， came， wants， cannot be foreseen)；
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找連詞（when， that， that)
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前面沒有從屬連詞的動詞即為主句的謂語動詞
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確定主從句
主句：This trend began during the Second World War ；
從句：定語從句when several governments came to the conclusion修飾the Second World War，本從句嵌套著一個二級從句即同位語從句that the specific demands cannot generally be foreseen in detail修飾conclusion和一個三級從句that引導的定語從句that a government wants to make of its scientific establishment修飾demands.
（3)解析
during the Second World War介詞短語做狀語醫(yī)學全在線搜集整,理gydjdsj.org.cn；when several governments came to the conclusion that the specific demands that a government wants to make of its scientific establishment cannot generally be foreseen in detail 做定語修飾the Second World War ；that the specific demands cannot generally be foreseen in detail同位語從句修飾conclusion ；that a government wants to make of its scientific establishment修飾demands.
（4)本句的參考譯文
這種趨勢始于第二次世界大戰(zhàn)期間，當時一些國家的政府得出結(jié)論：政府向科研機構(gòu)提出的要求通常是無法詳盡預見的。
總之，只要考生對句子結(jié)構(gòu)有個透徹的理解，弄清句子的各個成分，并可以借助連詞、介詞、非謂語動詞等手段把句子由簡單變得復雜，由復雜變得簡單，這樣句子結(jié)構(gòu)分析技能提高了，長難句也就攻克了，考研翻譯也就解決了。
