该句是一个复杂长句，从when到句子末尾是状语从句，在从句中包含一个由which引导的定语从句，修饰先行词scenes; 在前面的主句里面。包含一个由who引导的定语从句，修饰先行词people。例如：Those who want to go camping next Sunday sign your name here before class is over.

定语从句关系词的选择，要遵循“瞻前顾后”的原则，所谓“瞻前”即看前面的先行词指人还是指物;“顾后”即后面的定语从句，看关系词在定语从句中作什么成分。例如：This is the factory where he works. (状语) / This is the factory (that / which) he visited. (宾语)

【考例】(NMET 1992)In the dark street，there wasn't a single person ____ she could turn for help.

A. that B. who C. from whom D. to whom

[考查目标]定语从句。

[答案与解析]D “turn to sb for help”为固定短语，意思是“向某人求助”，所以选to whom。

3. When asked about the secret of his success, Steven Spielberg said that he owes much of his success and happiness to his wife and children. 当有人问起他成功的秘诀时。史蒂文?斯皮尔伯格说起他的成功和幸福主要来自于妻子和孩子。

该句中的 "when" 是时间状语从句的省略形式。在状语从句中，如果从句主语与主句主语一致或从句主语是it，而且从句谓语动词是be或包含be时，常常将从句主语与be省略。例如：Although born in Chicago, the author is famous for his stories about New York.

【考例】 (2003上海春招) Unless ___to speak，you should remain silent at the conference.

A. invited B. inviting

C. being invited D. having invited

[考查目标]状语从句的省略现象。

[答案与解析]A unless为连词，后面省略了you are，所以选invited。

4. Having good table manners means knowing, for example, how to use knives and forks, when to drink a toast and how to behave at the table. 在餐桌上，懂礼节意味着你知道如何使用刀叉，何时祝酒以及如何在用餐时举止得体。