Actually,did you know that it’s been found in laboratory testing that some types of oil arereally bad for us 分析这句话
问题描述：
Actually,did you know that it’s been found in laboratory testing that some types of oil are
really bad for us 分析这句话
答
事实上, 你知道那些在实验室进行测试的油, 有一些是对我们有害的.
did you know [that it’s been found in laboratory testing (that some types of oil) are really bad for us].
中括号内的整个是know的宾语, 小括号内的是补充说明前面那个it的.
答
翻译：事实上,你知道吗,实验发现一些油类是对我们非常不宜的.
第一that引导的宾语从句指 it’s been found in laboratory testing that some types of oil are really bad for us
第二个that引导的从句some types of oil are really bad for us 这一事实指的是前面句子中 it's当中的it
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