“Es aburrido” is not “está aburrido”
CEFR B1 · part 2
edumaterial's parts within the level. The European framework does not subdivide them.
“Si tuviera tiempo…”Building the three conditional patterns, and above all the unreal one: “si” plus…False friends: “embarazada” is not embarrassedThe words that look like an English word and mean something else: “embarazada”…“Dijo que…”: reporting what somebody saidTurning direct speech into “dijo que…”, moving the tense, the person, the possessives…“Busco a alguien que hable inglés”Choosing indicative or subjunctive after “que” depending on whether the person or thing…“Tan”, “tanto”, “tal”: one “so”, three wordsUsing “tan” with adjectives and adverbs, “tanto” with verbs and nouns —agreeing— and…“Ser” or “estar”: two verbs for one “to be”Choosing between “ser” and “estar” in everyday sentences: who you are and what you are…The rule, in three lines
With some adjectives the verb does not change the tone, it changes the meaning. Es aburrido means he is a boring person; está aburrido means he is bored right now. The same happens with listo (clever / ready), rico (wealthy / delicious), bueno (good / tasty or well), malo (bad / ill), verde (green / unripe) and vivo (sharp / alive).
The usual slip. Treating the choice as a matter of degree or politeness, and telling somebody eres aburrido when you meant they looked bored.
Why it catches you out. English uses two different words — “boring” and “bored”, “clever” and “ready” — so nothing warns you that Spanish is using ONE word and two verbs. Once you see that “ser” describes what something IS and “estar” reports the state it is IN, the whole list falls out of it and you do not have to memorise pairs.