雅思基础阅读难句解析-插入结构
11.You found upon that a general law that all hard and green apples are sour; and that, , is a perfect induction.
结构：共有4个谓语动词：found/are/goes/is，其中主句的谓语动词为found和that。分号后面的and前后两句话是并列结构。upon that等于because of that。第二个that引导a general law的同位语从句。第三个that指a general law。as it goes是插入语，等于up till now in itself。拆分为：
1) You found upon that a general law.
2) That all hard and green apples are sour.
3) And that is a perfect induction.
翻译：由此你发现了一条普遍规律，即所有又硬又青的苹果都是酸的。而且，迄今为止，这是一条不错的归纳。
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