Breakdown of Ты сегодня хорошо выглядишь.
ты
you (singular)
хорошо
well
сегодня
today
выглядеть
to look, to appear
Questions & Answers about Ты сегодня хорошо выглядишь.
What is the difference between выглядеть and смотреть? Don't they both mean "to look"?
Yes, but they are used in very different ways. Смотреть is an active verb meaning "to look at" or "to watch" (like watching TV or looking at a bird). Выглядеть, which is used here as выглядишь, means "to look" in the sense of appearance, describing how someone or something seems to the eye.
Why do we use the adverb хорошо instead of the adjective хороший (good)?
The dictionary form is выглядеть. Why does the "you" form выглядишь use an "-и-" ending instead of an "-е-"?
Выглядеть is one of those tricky exceptions! Even though its infinitive ends in "-еть" like a typical first-conjugation verb, it actually conjugates using the second conjugation pattern (with "и" endings). So it becomes я выгляжу, ты выглядишь, он/она выглядит, etc.
Why is the verb выглядишь at the very end of the sentence?
Russian word order is quite flexible. While you could perfectly well say Ты хорошо выглядишь сегодня, it is extremely common and natural in Russian to place adverbs like сегодня (today) and хорошо (well) right before the verb they describe. Putting the verb at the end here sounds very natural to a native speaker.