Question

This isthe school___we visited a year ago这句定语从句填什么??

Answer 1

1.This is the school (that) we visited three years ago.
visit是及物动词，visit some place，所以这个句子是that引导的宾语从句，that可以省略

解题方法：
1、看定语从句的句子是否完整，完整就用when、why、where关系副词作状语
如果不完整就用who、whom、that、which等作主语、宾语、表语
2、看定语从句的谓语动词，如果是及物动词一般要加一个宾语，即例题的visit+宾语，
如果定语从句的谓语动词是不及物动词，不需要加宾语，一般用关系副词
this is the factory ___we worked a year ago .A.where B that C which D.on which
就像这个句子中的work，是不及物动词，只能说work in the factory，不能说work the factory
所以选where=in which，D错在on

Answer 2

不需要填！省略that或which.