To say ‘as much as possible’ or ‘as much as you can’ in Japanese we take the standard potential form of the verb (usually the verb ‘to do’) and add だけ.
|I want you to come as quickly as possible.|
|Gather as much information as possible about tourist spots in Tokyo.|
We can form this phrase using the potential form of verbs other than ‘to do’:
|Be environmentally conscious and use energy as efficiently as possible.|
|It seems he drank as much as possible at yesterday’s drinks so today he can’t come because of a hangover.|