定语从句 where
问题描述：
定语从句 where
1 i am interested in all that you have told me .
这句为啥是定从不是宾从,all that you have told me 不是作in的宾语吗
2 the speed at which the machine operates is indicated on the meter.
可以换成the speed which the machine operates at is indicated on the meter吗
3 this is the place where i spent my childhood.
this is the place which i visited last summer,
为啥第一个用where 第二个用which 呢
THX!
答
1,之所以是定语从句是 that后面的句子修饰all
如果是宾从应该是I'm interested in what you have told me.
（宾从应该是从句部分是整个句子结构中所必不可少的,
而定从是你删掉从句整个句子结构还是完整的
就这个句子来说,你删掉that 后面的从句就变成了I'm interested in all
是个完整的句子）
2 可以
3 很简单,因为where=in which,注意动词搭配,spend+in才完整
原句相当于this is the place in which I spent my childhood
而第二句,visit不用搭配介词in,所以可以直接引导从句