定语从句是高考必考的知识点之一。请看下面两道高考题:1. The exact year ______ Angela and her family spent together in China was 2008. A. when B. where C.why D. which 2. Among the many dangers ______ sailors have to face, probably the greatest of all is fog. A. which B. what C. where D. when 第1题的答案是D。尽管先行词是时间theexactyear,但引导词在从句中充当spent的宾语,引导词只能是which或that。题意是:安吉娜和她的家人一起在中国度过的准确的年份是2008年。