took me three days this book.

问题描述:

took me three days this book.
第一个?是用that还是it?第二个?是用reading还是to read?为什么?它们有什么区别?

it to read
固定句型
it takes sb sometime to do sth
it 代表to read this book,that一般不代表动词不定式
用to read是句型要求