请帮忙分析一下这个句子的各个部分之间的关系
American schools,both public and private,consist of 12 years of grades- basically 8 years of eelementary school and 4 years of secondary of high school ,although grades 7 and 8,of 7,8 and 9 may be housed together in a middle school of junior high school.
人气：492 ℃ 时间：2020-06-13 02:41:53
解答
American schools主语
both public and private对主语的限定和补充,同位语
consist of谓语
12 years of grades- basically 8 years of eelementary school and 4 years of secondary of high school 宾语
although连词连接从句
grades 7 and 8, of 7,8 and 9从句主语
may be housed从句谓语（被动）
together in a middle school of junior high school从句状语.
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