此时seem为连系动词,后直接接形容词或to be+形容词或名词(短语)作表语,以说明主语的特征或状态。如:
Tom seems (to be)a very clever boy. 汤姆看上去是一个很聪明的男孩。
Everything seems easy.一切似乎很容易。
注意:afraid,asleep,awake等表语形容词不能直接跟在seem 之后,必须和seem to be 连用,如:They seem awake.(误)应改为:They seem to be awake.
“主语+seem +不定式(或不定式的完成式)”
此句型中的seem 用作不及物动词,不用在进行时态中,其与不定式一起构成复合谓语(不定式作宾语)。如:
a. The moon seems to change its shape. 月亮好像在变换形状。
b. I seem not to be able to make him happy. 我似乎不能使他高兴起来。
c. They seemed to be eating something. 他们好像在吃什么东西。
d. I seem to have caught a cold. 我似乎已经感冒了。
注意:seem 后跟不定式(短语)时,要注意不定式所表示动作发生的时间,以此来确定不定式的时态,如例c、d;seem 后不定式的否定式习惯上在seem 前加don’t ,也可以用seem not to...,如例b也可以说成:I don’t seem to be able to make him happy.