以它在从句中所作的成分来定,如是主语,宾语(包括介词宾语)表语,则说明该填的词是指代人或物的,填that/which/who/whom等,如作状语则填where/when.例如:
The days ________we spent in Hangzhou are forgettable. 分解成
The days are forgettable. We spent the days in Hangzhou.
很明显所填的词为spent的宾语。故填that/which。 但
The house ________they lived when they were young will be repaired next year.分解成
The house will be repaired next year. They lived in the house when they were young.
很显然 in the house为lived的状语,故填where
The house ________they lived in when they were young will be repaired next year在这句中所填词应为介词in 宾语,故填which / that.
希望有助于你!
追问再举几个简单的例子
本回答被网友采纳