雅思阅读：剑桥雅思阅读长难句分析(9)_雅思英语阅读

雅思阅读：剑桥雅思阅读长难句分析(9)

　　6. On 13 July 1907, Baekeland took out his famous patent describing this preparation, the essential features of which are still in use today.

　　分析：本句的主句为Baekeland took out his famous patent, On 13 July 1907为时间状语;describing this preparation为现在分词短语做定语，做his famous patent的定语;the essential features of which are still in use today为同位语，做this preparation的同位语;而其中of which are still in use today为定语从句，做features的定语，关系词为which。

　　7. The result was a resin known as Novalak, which became solule and malleable when heated.

　　分析：本句的主句为The result was a resin known as Novalak为过去分词短语做定语，做resin的定语;which became solule and malleable when heated.为定语从句，做Novalak的定语，关系词为which; when heated为过去分词短语做状语，在该定语从句中做时间状语。

　　8. The object could not be designed so that it was locked into the mould and therefore difficult to extract.

　　分析：本句的主句为The object could not be designed so that it was locked into the mould and therefore difficult to extract.为so that引导的结果状语从句。

　　9. Baekelands invention, although treated with disdain in its early years, went on to enjoy an unparalleled popularity which lasted throughout the first half of the twentieth century.