don't you think it necessary that he not be sent to Miami but to new York?宾语的否定为什么是这样

don't you think it necessary that he not be sent to Miami but to new York?宾语的否定为什么是这样

think it necessary t that sb (should) do
这是虚拟语气,用了SHOULD,但是SHOULD通常可以省略,故你只看到（should）not be..