it的用法,
问题描述：
it的用法,
From my Mum's love and patience,I learned that what a huge responsibility ) was to raise a child
为什么填it?
答
宾语从句还原是这样的
It was a huge responsibility to raise a child
可见it 是形式主语
由于引导宾语从句的what修饰a huge responsibility 而把这个名词词组前置了