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雅思阅读语法：定语从句
1. As far as the third factor is concerned,the history of science shows many instances in which the force of authority has operated in such a manner as to build up an exceedingly powerful resistance to further investigation;in some cases centuries elapsed before this resistance was eventually broken down,as happened in cosmology,for example.
第一层： As far as the third factor is concerned ,状语从句1 the history 主 of science 定 shows 谓 many 定 instances 宾 in which the force of authority has operated in such a manner as to build up an exceedingly power- 定语从句 ful resistance to further investigation ; in some cases 状 centuries 主 elapsed 谓 before this resistance was eventually broken down,as 状语从句2 happened in cosmology,for example.考试大
第二层： As far as 引 the third factor 主语 is 系 concerned 表语
in which 引 the force 主 of authority 定 has operated 谓 in such a manner as to build up an exceedingly powerful re- 状 sistance to further investigation
before 引 this resistance 主 was 系 eventually 状 broken down, 表 as happened in cosmology，for example 定语从句
第三层： as 引 happened 谓 in cosmology,状 for example. 插入语
要点 本句由两个分句构成，以分号连接。第一个分句的主干为the history of science shows many instances，in which引导的定语从句修饰instances，such as 表结果，后接不定式;在第二个分句中，before 引出时间状语从句：before this resistance was eventually broken down;代词as在此是关系代词，引出定语从句：as happened in cosmology。resistance：抵抗;阻力。cosmology：宇宙论，宇宙哲学。考试大
