雅思阅读：剑桥雅思阅读长难句分析（7）_雅思英语阅读

雅思阅读：剑桥雅思阅读长难句分析（7）

　　分析：本句较长，主句为there be结构，即there has been a steady improvements in how fast athletes run, how high they jump and how far they are able to hurl massive objects, themselves included, through spacehow fast athletes run, how high they jump and how far they are able to hurl massive objects, themselves included, through space中三个how引导的从句并列，都为in的宾语从句;Since the early years of the twentieth century为本句的时间状语，由since引导;when the International Athletic Federation began keeping records为定语从句，关系词为when, 做the early years of the twentieth century的定语从句。

　　11. Over the past century, the composition of the human gene pool has not changed appreciably, but with increasing global participation in athletics and greater rewards to tempt athletes it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early.

　　分析：本句为并列句，由but连接，句子Over the past century, the composition of the human gene pool has not changed appreciably和句子with increasing global participation in athletics and greater rewards to tempt athletes it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early并列;句子with increasing global participation in athletics and greater rewards to tempt athletes it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early中主句为it is more likely that individuals possessing the unique complement of genes for athletic performance can be identified early其中that individuals possessing the unique complement of genes for athletic performance can be identified early为that引导的主语从句，it为形式主语。