1、This trend began during the Second World War, 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.
(1)句子拆分
拆分點:從屬連詞、介詞、標點符號
This trend began ∥during the Second World War, ∥ 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.
(2)句子結構
找謂語動詞(began, came, wants, cannot be foreseen);
↓
找連詞(when, that, that)
↓
前面沒有從屬連詞的動詞即為主句的謂語動詞
↓
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;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。