¡Vaya! Mis gafas están rotas.
Oops! My glasses are broken.
Sus pantalones estaban sucios.
His trousers were dirty.
¡Qué sorpresa! La habitación de mi hija está ordenada.
What a surprise! My daughter's room is tidy.
Marina, estás muy guapa hoy.
Marina, you look very pretty today.
Remember, this specific use of estar is used for non-permanent conditions. For permanent physical descriptions see Using ser (not estar) to express an essential or permanent characteristic
Hola Per Ivar,
If you are referring to the sentences in the lesson, the first one is using the present tense "¡Vaya! Mis gafas están rotas." and the second one is using the imperfect tense "Sus pantalones estaban sucios."; but it doesn't matter which tense you use with estar in this case. This lesson is about using "estar" (not the other verb meaning "to be", ser) to talk about a physical condition. You can use different tenses.
I hope this clarified it.
Saludos
Inma
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