Respuesta :
Answer:
Vuelva
Trabajemos
Contaminar
Vamos
Terminamos
Observar
Cambiemos
Estén
Sea
Explanation:
Answer:
The right conjugation of the verbs between parentheses is:
- Voy a estudiar ecología cuando vuelva a la universidad.
- No podemos evitar el cambio climático, a menos que todos trabajemos juntos.
- No podemos conducir sin contaminar el aire.
- Siempre recogemos mucha basura cuando vamos al parque.
- Elisa habló con el presidente del Club de Ecología después de que terminó la reunión.
- Vamos de excursión para observar los animales y las plantas.
- La contaminación va a ser un problema muy serio hasta que nosotros cambiemos nuestros sistemas de producción y transporte.
- El gobierno debe crear más parques nacionales antes de que los bosques y ríos estén completamente contaminados.
- La gente recicla con tal de que no sea difícil.
Explanation:
The translation of the sentences is:
- I'm going to study ecology when I return to college.
- We cannot avoid climate change, unless we all work together.
- We cannot drive without polluting the air.
- We always collect a lot of trash when we go to the park.
- Elisa spoke with the president of the Ecology Club after the meeting ended.
- We go on an excursion to observe animals and plants.
- Pollution will be a very serious problem until we change our production and transportation systems.
- The government must create more national parks before forests and rivers are completely contaminated.
- People recycle as long as it is not difficult.
In the sentences conjugations were used in Present Simple and Subjunctive, Simple Preterite and some verbs do not require conjugation, I mean, they are in Infinitive Form. There are some generalities that you may take into account these tenses:
- Regularly the Infinitive Form is used after words like "por", "para", "sin" or just after a conjugated verb.
- The sentences in which a verb was used in Preterite, already reflected that they belonged to the past tense since previously there was already a verb in the past.
- The Subjunctive Present is used when the actions mentioned in said conjugation are not specified in time, I mean, it is not mentioned when they start or when they end.