do you know the details about the accident ___ in the street yesterday

问题描述:

do you know the details about the accident ___ in the street yesterday
为什么填that happened 不能填happend

___ in the street yesterday
这句是定语从句,修饰accient,且先行词做主语,that不可省略,在定语从句中只有做宾语是可以省略.当然that可以用which代替.