His brother is a college student; so is mine.
他弟弟是大学生,我弟弟也是
He used to have his further study abroad; so did I.
他曾去国外深造过,我也去过
One of my friends can speak three foreign languages; so can his wife.
我的一个朋友会说三门外国语,他的妻子也会.
They are now preparing for their final examinations; so are we .
他们正在为期末考试作准备,我们也一样.