In the twenties，jazz became the hottest new thing in dance music, much as ragtime had at the turn of the century，and as would rhythm and blues in the forties，rock in the fifties，and disco in the seventies.
(特殊结构much as…and as…——就像…以及…一样)
20年代，爵士乐成为舞蹈音乐中最热门的新事物，正如世纪之交流行的拉格泰姆音乐，以及40年代节奏与布鲁斯，50年代摇滚乐，和70年代迪斯科将会流行一样。
分句1. In the twenties，jazz became the hottest new thing in dance music,
分句2. much as ragtime had at the turn of the century
分句3. and as would rhythm and blues in the forties，rock in the fifties，and disco in the seventies.
1和2嵌套
2和3并列
2是1的补语。2中包含much as…and as的并列结构。
版权声明：本文系网独家稿件，版权为网所有。转载须注明来源及作者，否则必将追究法律责任。
微信扫描下方二维码，第一时间知晓托福考试真题预测及解析，还有北美留学最新动态喔~(微信号：toefl120)!