英语翻译became可以改成become吗?为什么?

英语翻译became可以改成become吗?为什么? 不是过去时吗 为什么是become 不是 became? 为什么是have become 而不是have became? “get adj.”变得怎样怎样可以改成“become adj.”吗?为什么? 下面补充例句中的“become”,为什么不能用“became”呢? How did he become an actor?这句中become为什么不是became? 为什么become后面加了that,become后面可以跟从句吗? 本句中为什么是become,而不是became.发生在过去嘛 这个that 改成which可以吗 为什么? 是have become还是 have became had become 和 had became 的区别?还是没有had became,只有had become 和 be gradually become请问为什么不是gradual become?become不是连系动词吗?为什么用副词?谢