一道SAT语法题--IS from princeton

问题描述:

一道SAT语法题--IS from princeton
In the predawn crispness of a September morning,the conjunction of Mars and Venus thrilled the amateur astronomer (like on the first occasion he had seen it.)(括号划线)
答案将划线部分修改为:as it had the first time he saw it.
选是选对了,不过不太清楚原因,请大师把正确答案的句子成分分析一下,

like 后面不能接动词,只能接名词,所以like不对;这句话如果展开成两句话,就是the conjunction thrilled the amatuer astronomer; the conjunction had thrilled him the first time he saw it.答案中的两个it都指的...