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　　● 题目：

　　It is highly appropriate that Dr Samuel Johnson, the very model of an eighteenth-century literary man, as famous in his own time as in ours, should have published his Dictionary at the very beginning of the heyday of the middle class.(剑5, Test 1 passage 1)

　　● 分析：

　　本句的主句为“It is highly appropriate that… ”, 其中it为形式主语，真正的主语为that引导的主语从句，即“that Dr Samuel Johnson, the very model of an eighteenth-century literary man, as famous in his own time as in ours, should have published his Dictionary at the very beginning of the heyday of the middle class”;在主语从句中“the very model of an eighteenth-century literary man”为Dr Samuel Johnson的同位语，“as famous in his own time as in ours”为Dr Samuel Johnson的定语。