seem之后常接不定式，有时候根据需要不定式还可用完成时或进行时。

His features seemed to change. 他的容貌似乎变了。

The fire seemed to be going out.火看来快熄灭了。

She seemed to have lost interest in food. 她好像对食物不感兴趣了。

▲seem to get...“似乎变得......”和seem to be getting...“似乎正/逐渐变得......”都正确。

It seemed that my bags got heavier and heavier as I carried them.

→ My bags seemd to get heavier and heavier as I carried them.

It seemed that my bags were getting and heavier and heavier as I carried them.

→ My bags seemd to be getting heavier and heavier as I carried them.