Réponse :
Bonjour,
1-If I get a headache, I usually take an aspirin.
2-If you are a vegetarian, you don't eat meat.
3-If I make a mistake, the teacher always finds it.
4-If flowers don't get any water, they die.
5-Mr.Jones speaks more slowly if we don't understand him.
6-If you mix the colors red and yellow, you get orange.
7-If you don't put the butter in the fridge, it goes bad.
8-If something is lighter than water, it floats.
9-I wake up early if I go to bed early at nights.
10-If you heat ice, it melts.
11-If I don't have breakfast, I feel dizzy.
12-Do you mind if I use your telephone?
13-If babies are hungry, they cry.
14-If I sleep too long, I wake up with a headache.
15-If it rains hard, everyone stays indoors.
16-If you drop an egg, it breaks.
17-If Jane asks me, I always help her.
18-You put on weight if you don't do enough exercise.
19-If you lie in the sun, your skin turns to red.
21-If you cut your finger, the finger bleeds.
22-If you leave a cake in the oven for a long time, it burns
23-Farmers always complain if it doesn't rain enough in the summer.
24-If you pour oil on water, the oil floats .
25-If you water plants regularly, the plants grow.
Explications :
Le conditionnel ZERO est le plus simple, les deux parties de la phrase sont au présent ( pas besoinde faire attention à la concordance des temps ...)
Il s'utilise pour faire des déclarations sur le monde, vérités génerales , scientifiques ...