see the model ship floating in the pool?如何解释.动词原形能充当主语吗

It Is the hole in the ship,rather than the floating iceberg, It's the hole in the ship ,rather than the floating iceberg It is the hole in the ship,rather tha the floating iceberg,_ His model ship doesn't in the box i can see him （ ）in the swimming pool now. in the pool&at the pool in the pool和at the pool on the ship还是in the ship Can you see the ship ( ) the bridge don't miss the early morning river boat ship to the Floating Don't eat anything until you see the dentist.为什么用see动词原形,这个题 in the pool at the pool 有什么区别?