英语动词的变化,in many ways my disability has helped me grow stronger psychologically and become more independent.这里become 为什么用原形,而不用过去式呢?

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英语动词的变化,in many ways my disability has helped me grow stronger psychologically and become more independent.这里become 为什么用原形,而不用过去式呢?

英语动词的变化,in many ways my disability has helped me grow stronger psychologically and become more independent.这里become 为什么用原形,而不用过去式呢?
英语动词的变化,
in many ways my disability has helped me grow stronger psychologically and become more independent.这里become 为什么用原形,而不用过去式呢?

英语动词的变化,in many ways my disability has helped me grow stronger psychologically and become more independent.这里become 为什么用原形,而不用过去式呢?
become-became-become
这是过去分词
has+过去分词,完成时
and连接两个并列主语
helped是过去分词
所以become用过去分词
(become和helped都是谓语,才并列)