问题
选择题
I’d appreciate ____ if you would like to teach me how to use the computer.
A．that
B．it
C．this
D．you
答案
B
it指下文中要提到的事物。类似的还有: I hate it when he speaks with his mouth of food./ Like it when…/depend on it that…等.这个句子显然不能理解为宾语从句,if 引导的是状语从句,it 是代词做appreciate 的宾语
近中邻
面龋坏，不松动，已做根管治疗，曾做银汞合金充填，近中邻面事物嵌塞无法解决，现要求嵌体修复