Copular verbs

Appear to have + Past participle
We use this structure when we are making guesses about someone's past actions based on what we can see.

• You appear to have come to the wrong place.
• He appears to have eaten too much.
• He appears to have bought a new car.

Seem to have + Past participle
We use this structure when we make guesses about what has happened based on evidence. (Objective facts and emotional impressions)

• The car seems to have broken down.
• They seem to have missed their train.
• It seems ridiculous that we have to stay here.