But last year, the British competitor Chris Boardman set world records while winning titles in the Olympic cycling pursuit events on a custom-built, carbon-fibre bicycle with lower weight and wind resistance than standard models.
But last year时间状语, the British competitor主语 Chris Boardman限制性同位语 set谓语 world records宾语 while winning titles in the Olympic cycling pursuit events on a custom-built, carbon-fibre bicycle with lower weight and wind resistance than standard models时间状语.
目前分词作状语时，有时为了强调为什么种状语，可在分词前加相应的从属连词，构成连词+分词这种状语形式。现代语法视其为非限定分句的一种。连词的词义表明分词为何状语。winning这个目前分词带有我们的宾语和状语，剖析如下
winning及物动词 titles宾语 in the Olympic cycling pursuit events宾语的定语 on a custom-built, carbon-fibre bicycle with lower weight and wind resistance than standard models介词短语作工具状语（方法），其中with介词短语为bicycle的定语。
译文：但在去年，英国参赛者克里斯博德曼在奥利匹克自行车追逐赛中取得该项目头衔并创造新的世界纪录。他当时骑的是一辆定制的、比标准车型轻且风阻更小的自行车。