这个句子中系动词为什么变成be了
问题描述:
这个句子中系动词为什么变成be了
It is crucial that those new plants be environmentaly sound.
SORRY,全句是If we are ever going to protect the atmosphere,it is crucial that those new plants be environmentally sound.(在这里plants 不是植物,是工厂的意思)
答
在It is important/necessary/essential/crucial 等+that 结构中,that 从句里用(should)do .