八年级上册英语seem的主要用法如下：
1. seem后接形容词构成系表结构。
e.g. He seemed unhappy this morning.What's the trouble with him?(他今天早上似乎不开心，他怎么啦？)2.seem后接动词不定式。"seem to do sth."e.g.He seemed to be tired of such a boring life.（他似乎已经厌倦了这种乏味的生活。）3.It seems that后接从句。e.g.It seemed that no one would help him solve the problem.（好像没有人愿意帮他解决这个问题。）
