《红宝书考研英语》为考研助力！红宝书·为考研的同学整理解析历年考研真题中的长难句。
Yet it is precisely these non-celebrity influentials who, according to the two-step-flow theory, are supposed to drive social epidemics, by influencing their friends and colleagues directly.
词汇突破
precisely [prɪˈsaɪsli]
adv. 精确地；恰恰
celebrity [səˈlebrəti]
n. 名人；名声
colleague [ˈkɑːliːɡ]
n. 同事，同僚
结构分析
本句的主干结构是 it is precisely these non-celebrity influentials to drive social epidemic，其中含有一个 it is... who... 的强调句。according to the two-step-flow theory 是介词短语做状语。by influencing their friends and colleagues directly 是介词结构做方式状语。
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