Bonjour,
Réponse :
1. Droughts have become longer since the 1970s.
2. Average temperatures have risen more quickly since 1979.
3. Scientists have learned a lot in the last 10 years.
4. How much has the global temperature risen in the last 100 years?
Present perfect
forme affirmative :
sujet + has/have + participe passé + complément
( phrases 1- 2 -3)
forme interrogative:
( Mot interrogatif ) + has/have + sujet + participe passé + complément ?
( phrase 4 )
