请比较下面的句子,你的这个问题就解决了
1 This is the camera.I lost the camera last week 把它们合并起来,就成了：
This is the camera that / which (===the camera) I lost last week.这里the camera的指代词是that或者which.
2 This is the same camera .I lost the same camera last week.把它们合并起来,就成了：
This is the same camera that(===the same camera) I lost last week.如果被定语从句所修饰的名词前面有the same存在,我们通常不用which,而是用that来指代.
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