Ser Crazy
The one test that settles ser vs estar — plus every use of ser, out loud.
Ser is the verb for what something is — identity, not condition. It covers the DOCTOR uses: Description, Occupation, Characteristic, Time, Origin, Relationship — soy profesora (occupation), soy de México (origin), son las tres (time), es paciente (a permanent trait). The quick test against estar: if it's who or what someone is by nature, use ser (es alto); if it's how they are right this minute, use estar (está cansado). Present forms: soy, eres, es, somos, son.
Below: the phrases each use builds, the ser/estar slips that give you away, and a way to practise every use out loud — no conjugation tables, no fill-in-the-blanks, just talking.
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Regional Spanish
Textbooks teach one word. Locals use several — pick your region's and stay consistent.
Watch out
The part no drill site can do
Carla
Your grammar teacher for this pack
There's nothing to fill in here — in the Ser Crazy lessons you talk, and Carla keeps handing you reasons to reach for ser. She drops you into a networking introduction: your name, your job, where you're from (soy…, soy ingeniero, soy de…). Then she asks you to describe a friend's character (es muy paciente, es alta), and finally when and where Saturday's party is (la fiesta es en mi casa, es a las nueve) — every DOCTOR use, out loud, until choosing ser stops feeling like a decision.
Blank mid-sentence and nothing bad happens — she waits. That's the practice, without unnecessary judgement.
Finish the 8 lessons and Ser Crazy is yours — earned, not given.
First 10 lessons free · 10-minute spoken lessons · your AI coaching team remembers you
Quick answers
Use ser for what something is by nature — identity, origin, profession, permanent traits, time (es alto, soy de Lima, son las tres). Use estar for where something is and how it is right now (está en casa, está cansado). Same adjective, two meanings: es aburrido = he's boring; está aburrido = he's bored.
soy (I am), eres (you are), es (he/she/it is), somos (we are), son (they / you all are). It's irregular, so there's no ending to derive — you learn it by using it: soy estudiante, somos hermanos, ellos son ingenieros.
DOCTOR is a memory hook for the six core uses of ser: Description (es alto), Occupation (es doctora), Characteristic (es paciente), Time (son las tres), Origin (soy de México) and Relationship (es mi amigo). If your sentence is one of those, reach for ser, not estar.
Ser. A job is part of who you are: soy ingeniero, ella es doctora, ellos son ingenieros. Note Spanish drops the article — soy profesora, not soy una profesora.
Time uses ser, and the verb agrees with the number: es la una for one o'clock, but son las tres, son las ocho de la noche for the rest. Dates take ser too: hoy es martes, es el 15 de mayo.
