1.十天后，贾森被宣判无罪。他获得了自由。

译文：Ten days later , Jason was acquitted. He had acquired his freedom.

过去完成时错误，改为一般过去时。He acquired his freedom.

2.即使如此，他还是使自己适应了人生中的变化。

译文：Even though , he had adapted himself to the changes in his life .

Even though为引导从句的连词，本句为错误。改为副词though作连接性状语，放在句末。如果是单句翻译，没有参照，则谓语用一般过去时。如果有上下文，过去完成时有可能是正确的。

He adapted himself to the changes in his life, though.

3.面对他儿子的成功，海军上将调整了他的期望。

译文：Faced with his son's success , the admiral adjusted his expectations.

本句没有错误，be faced with为习语，这里省略了现在分词Being。你应该查查词典face的用法。