106．Kindergartens，vacation schools，extracurricular activities，and vocational education and counseling extended the influence ofpublic schools over the lives of students，many of whom in the larger industrial cities were the children ofimmigrants．

(定语从句many of whom…修饰students)

幼儿园、假期学校、课外活动、职业教育和咨询服务等将公立学校的影响扩大到学生的生活中，而在更大的工业城市中，许多学生都是移民的后代。

分句1：Kindergartens，vacation schools，extracurricular activities，and vocational education andcounseling extended the influence of public schools over the lives of students

分句2：many of whom in the largerindustrial cities were the children of immigrants

1和2嵌套