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[求助]新概念4的句子理解,l2中的:Insectswouldmakeitimpossibleforustoliveintheworld;theywoulddevourallourcropsandkillourflocksandherds,ifitwerenotfortheprotectionwegetfrominsect-eatinganimals.其中二个i

题目详情
[求助]新概念4的句子理解,
l2中的:Insects would make it impossible for us to live in the world; they would devour all our crops and kill our flocks and herds,if it were not for the protection we get from insect-eating animals.
其中二个it指代什么?是to live in the world?
All this seems to me to link them with life,and the origins of things.It's as if they were,in some sense,cosmic beings in violent and lovely contrast with us suburban creatures.
其中的it又指代什么?
第二句是l5中的,我忘写了汗。
我以为凡是it除了之天气的都有指代的,在很多论坛上也常有人质问别人写的句子中it指代什么,难道在这里是一个固定句型?有没有什么例子呢?
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答案和解析
Q1:it无具体意义,为形式主语,引导了一个虚拟语气的从句.
如果不是因为吃虫动物的保护,大量的昆虫会吞噬我们所有的庄家,杀死我们的家畜和家禽.
Q2:it同上,也无具体意思