一、“主语+ seem +（to be ）+表语”,表语多为名词或形容词,有时是其他的词或短语,以说明主语的特征或状态.例如：
Tom seems （to be ） a very clever boy. 汤姆看上去是一个非常聪明的男孩.
The man over there seems to be a new teacher. 那边的那个人看上去像一个新老师.
Mr Black seemed to be quite happy. 布莱克先生好像十分快乐.
This small town seems changed a little. 这个小城镇似乎有点儿变化.
二、“主语+ seem + 不定式”,此句型中的seem与不定式一起构成复合谓语.例如：
Mrs Green doesn’t seem （或seems not ） to like the idea. 格林夫人似乎不太喜欢这个主意.
The children seemed to be eating something in the room. 孩子们好像正在房间里吃东西呢.
The young man seemed to have changed much. 这个年轻人看起来变化很大.
三、“There + seem to be +名词”,其中to be 可省略.seem 的单复数形式要根据后面作主语的名词的单复数形式而定.例如：
There doesn’t seem to be much hope of our beating that team. 看来我们战胜那个队没有多大希望.
There seems no need to wait longer. 看来没有再等的必要了.