Respuesta:
1. Match the two parts of the zero conditional sentences. Then choose the correct verb in bold.
a) If you water a plant, it grows.
b) If I feel tired, I go to bed.
c) If the sun shines, it is warm.
d) If you heat water to 100°C, it boils.
e) If you drop an object, it falls.
2. Complete the zero conditional sentences with the correct form of the verbs in brackets. Use the present simple.
a) If you mix blue and yellow, you get green.
b) If the phone rings, please answer it.
c) If you touch fire, you get burnt.
d) If she exercises, she loses weight.
e) If you press this button, the light comes on.
3. Complete the zero conditional sentences by choosing the correct form of the verbs from the box. Put the verb in the present simple.
a) If you heat ice, it melts.
b) If you burn paper, it burns.
c) If it rains, the grass gets wet.
d) If you don't water a plant, it dies.
e) If you heat chocolate, it melts.
4. Correcting the mistakes.
1. Wood makes paper.
2. You cannot use your mobile during the class.
3. Water boils if you heat it to 100 degrees.
4. Plants die if they don't get enough water.
5. She loves butter on the BBQ.
5. Write five zero conditional sentences using prompts.
1. If you cut your finger, it bleeds.
2. Water freezes if you put it in the freezer.
3. If Mary listens to classical music, she always feels happy.
4. If you heat iron, it becomes hot.
5. If you sit down, you say "seat." (Nota: Esta última frase no parece del todo correcta o natural en inglés).
