"His determine look suggested that he had made up his mind."

"His determine look suggested that he had made up his mind."可以帮我解释以下吗?
还有,句子中的determined是动词过去式吗?如果是的话那么句子不是有两个动词了吗?suggested是什么的什么形式?
原句中的“determine"更正为"determined"