Réponse :
Bonjour,
1. Many wildlife habitats will be destroyed if man KEEPS polluting the environment.
2. If we dump all sorts of chemicals into rivers, we WON’T BE ABLE TO swim in them in the future.
3. If we DON’T STOP cutting down so many trees, we WIIL ENDANGER our oxygen supply.
4. Soon the Earth’s resources will be exhausted if the human population CONTINUES to grow.
5. If everybody continues to use aerosols and CFCs,the hole in the ozone layer WILL GET bigger.
6. If the sun radiation can’t escape into space,Earth’s temperature WILL INCREASE steadily.
7. If the global temperature RISES, sea levels WILL RISE too.
8. We’ll threaten our own existence if we DON’T CUT DOWN on waste rapidly.
9. People WILL RUN OUT OF drinking water one day if they DON’T USE it more rationally.
10. If he WANTS to help the planet, then he WILL HAVE to change his habits.
La proposition principale exprime le résultat
La proposition subordonnée introduite par IF exprime la condition ( elle peut se placer en début où à la fin de la phrase )
Il faut respecter la concordance des temps :
si la proposition subordonnée est au futur ( will ) la proposition principale est au présent.
