Look/seem/appear + adjective

She looks very old (Elle a l'air très vieille).

He seems hungry. (Il a faim).

Marga appeared tired. (Marga semblait fatiguée).

Subject + look + as if + sentence

The car looks as if the car needs cleaning. (La voiture semble avoir besoin d'être nettoyée).

You look as if you've had a bad day. (On dirait que vous avez eu une mauvaise journée).

It looks/seems/appears + as if + sentence

It looks as if the car needs washing. (Il semble que la voiture doive être lavée).

Seem/appear + infinitive

The weather seems to have changed. (Le temps semble avoir changé).

She appeared to be crying.

Look/seem + like + noun

He looks like my uncle. (Il ressemble à mon oncle).

It may seem like an impossible task, but it isn't really. (Cela peut sembler une tâche impossible, mais ce n'est pas vraiment le cas).