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it is crucial that those new plants be environmentally sound

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/22 10:11:20
it is crucial that those new plants be environmentally sound.主句中为什么动词用了原形?
If we are ever going to protect the atmosphere, it is crucial that those new plants be environmentally sound.
这是一个典型的虚拟语气.当句子中有crucial,important,necessary等形容词做表语时,后面that引导的主语从句要用虚拟语气,形式是(should)+动词原型,should可以省略掉.