number of smokers看成先行词,后面非限制性定语从句用which引导。殊不知,这里关系代词指代的是“The number of smokers has dropped by 17 percent in just one year.”整个一句话。另外,as和which在定语从句都可以指代一句话,但前者有“正如……”的意思,后者则没有。还可以抓住as is reported这一常用结构,类似的还有as is known/expected/planned/mentioned/said等。Р10.【2015·安徽】28.Some experts think reading is the fundamental skill upon______ school education depends.РA. it B. that C. whose D. whichР【答案】DР【考点定位】考查定语从句Р【名师点睛】本题考查定语从句。定语从句分为限制性定语从句和非限制性定语从句,有逗号隔开的是非限制性定语从句。定语从句的关系词分为关系代词和关系副词。在定语从句中,介词后只能跟whom或which,指人用whom;指物用which。这里的先行词是skill,指物。Р2014年试题Р1.【2014·重庆卷】9. We’ll reach the sales targets in a month _______ we set at the beginning of the year.Р A. which B. where C. when D. whatР【答案】AР【解析】Р试题分析:题意:再有一个月就能完成年初制订的销售目标。which指代targets, 在从句中充当set的宾语,排除B、C两项;D项只能引导名词性从句,而本题是一个定语从句,故选择A项。Р考点:考查定语从句的用法。