When I caught him cheating me,

问题描述:

When I caught him cheating me,
当我发现他欺骗我时
为什么这里是caught him,而不是caught he呢?

him是宾语,he是主格,一个单句中只能有一个主语,前面有了I,后面肯定不能用he,句子缺少宾语,所以要用him