The fact that aircraft may be vulnerable to inter

Question

The fact that aircraft may be vulnerable to interference raises the risk 句话为啥有 may be vulnerable to和raises两个谓语

Answer 1

您好，
这个是同位语从句。
the fact和 aircraft may be vulnerable to interference指向一个意思，后者是前者的从句。所以会出现俩个谓语。
如果去掉从句，The fact raises the risk 这就是这句话主句
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同谓语that后面不应该是完整的句子吗？按理说到interference这就应结束

追答

The fact that aircraft may be vulnerable to interference raises the risk
｛that 【aircraft may be vulnerable to interference】｝
that是引导词，【】这个里面是从句部分，从句是完整句子
The fact raises the risk。是主句，也应该是完整句子
这句从句部分是与the fact表达同一个意思的。这是同位语从句的性质~