Error Clinic

Spot the Wrong Verb Form

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Name the violated rule and correct each sentence before revealing.

She don’t understand the directions.

She doesn’t understand the directions. · third-person singular negative uses does not + base

I am knowing the answer.

I know the answer. · know is stative

When I will arrive, I will call you.

When I arrive, I will call you. · future time clause uses present

Yesterday we buyed our tickets.

Yesterday we bought our tickets. · irregular past

Before to leave, she checked her bag.

Before leaving, she checked her bag. · preposition + -ing

DIAGNOSE → RULE → CORRECT → CHECK

Slide 37

Tips

Spot the Wrong Verb Form

  1. Diagnostica la regla exacta: does + base, stative simple, future time clause present, irregular past o preposition + -ing.
  2. Corrige primero la estructura y después lee la oración completa para confirmar el significado.
  3. Memoriza el contraste peligroso, no solo la respuesta: know, not am knowing; bought, not buyed.