Perfil del enlace: Gramática inglesa básica Detalles:
Present Simple(positive): Subject + Infinitive(he, she, it + -s), Present Simple(negative): Subject + don't/doesn't + Infinitive, Present Simple(questions): do/does + Subject + Infinitive, Past Simple(Regular Verbs): Infinitive + -d or -ed, Past Simple(negative): Subject + didn't + Infinitive...
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