问题补充：
我看我的讲义上是这么说的：
similarly, KIm became the leader doesn't allow a passive version: The leader was became by Kim. So the leader is not an object in this sentence.
我勒个去,这到底是什么意思呀?
答：Similarly, the sentence "Kim became the leader" doesn't allow a passive version: "The leader was become by Kim." So "the leader" is not an object in this sentence.
译：类似地,Kim became th leader 这个句子不允许变成被动语态：The leader was become by Kim.
因此 the leader 在这个句子中不是宾语.