There was the best meal I have had at the restaurant last night.为什么要把There换成it?

题目

There was the best meal I have had at the restaurant last night.为什么要把There换成it?
这是初三英语奥林匹克的31题

答案

There was the best meal I have had at the restaurant last night.【It 】was the best meal【that引导定语从句,做从句宾语,省略】 I have had at the restaurant last night.其中it 是代词,代替the meal .there ...