Individually, study the grammar above and write the formula in the provided space (affirmative, negative and interrogative).
Affirmative formula
- El sujeto va primero: subject.
- Luego el verbo to be conjugado en presente: am / is / are.
- Después el verbo principal en forma -ing: verb in -ing form.
- Se agrega el objeto o complemento: object.
- Se cierra con la expresión de tiempo: time expression.
subject + verb to be + verb in -ing form + object + time expression. Example: You are drawing a tree right now.
Negative formula
- Sujeto: subject.
- Verbo to be + not: am not / is not / are not.
- Verbo principal en -ing.
- Objeto y expresión de tiempo.
subject + verb to be + not + verb in -ing form + object + time expression. Example: He is not doing homework at this moment.
Interrogative formula
- El verbo to be se coloca antes del sujeto: verb to be + subject.
- Luego el verbo principal en -ing.
- Después el objeto y la expresión de tiempo.
- Se cierra con signo de interrogación.
verb to be + subject + verb in -ing form + object + time expression + ? Example: Are we speaking English right now?











