考研英语历年真题阅读长难句 100 句精析 1
While warnings are often appropriate and necessary — the dangers of drug interactions,for example—and many are required by state or federal regulations,it isn't clear that they actually protect the manufacturers and sellers from liability if a customer is injured
【译文】 尽管警告常常是适当而且必须的——比如对于药物相互作用的危险提出警告——许多警告还是按州或联邦政府规定要求给出的,然而(我们) 并不清楚,如果顾客受到伤害时,这些警告是不是确实可以使得生产者和销售者豁免责任
【分析】 在这个主从复合句中,it isn't clear that they actually protect the manufacturers and sellers from liability if a customer is injured 是主句
主句用了一个形式主语 it,真正的主语是that 引导的从句,而that 从句之后是一个 if 引导的条件从句
从句由两个部分组成,中间用 and 连接
破折号之间的部分是举例说明 warnings 的内容
注意:many are required by state or federal regulations 中的many是指 many warnings
Additional social stresses may also occur because of the population explosio