It is urgent that the acute problem of air pollution in the city be solved.

It is urgent that the acute problem of air pollution in the city be solved.

题目
It is urgent that the acute problem of air pollution in the city be solved.
请问真正谓语是?为什么IT IS引导的句子最后冒出来一个BE SOLVED,这句子是不是错了、
答案
没有错.be solved前面省略一个should.句型:It's urgent that sb (should) do sth\sth (should )be done.真正主语是that the acute problem of air pollution in the city be solved.it是形式主语.
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