His first name is the same as that of his French teacher.as后

that of his French teacher 是只保留了一个被比对象的定语从句,先行词是the same
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再问： 我看半天资料，好像只有the same as...和the same that...找不到the same as that，这么说这是句正确的句子咯？ 定语从句么，那表语是谁哇？
再答： the same 是主句的表语 the same as 【that】这个that代【the first name】以避免重复， 是同名异物的用法