It seems to me that you did not do very well in the first two years.
看来你第一、二年的成绩不甚理想
这是一个固定句型,结构是：it seem (to sb) + that从句,意思是“（对某人来说）似乎/好像...”.
句子谓语：seems
状语：to me
that引导表语从句：that you did not do very well in the first two years.
主语：you
谓语：didn't do
状语：very well in the first two years.