They also can free to choose their job .有语法错误吗?请指出翻译是：他们也可以*选择他们的工作

They also can free to choose their job .应该改为They also can be free to choose their job.原因是因为free是个形容词（adj） 前面应该有个系动词(am is are),情态动词后面是加动词原形的(can+do)所以不应该加形...