这句话的从句是宾语从句还是表语从句?He has become what he wanted to be ten years ago.答案上说是表语从句,可是我感觉这明明就是宾语从句啊,

表语从句.become是联系动词.含有是的意思,解释为变成是.
可以做联系动词的有：be,seem,look,smell,taste,sound,come,go,get,run,turn,become,fall,grow,prove,appear,measure,weigh,cost,keep,stay,remain等等