seem doing sth 还是 seem to do sth???

seem to do sth.指的是看起来要做某事，而seem doing sth.是说看起来像在做某事
意思不同，看你用在什么语境中，想要表达一个什么意思了

seem to do.
seem是系动词,加不定式
但可以有seem to be doing.

seem to do sth.seem doing sth都可以

seem to do sth,老师讲的

to do

to do