i'd like two cups of tea for cooking vegetables.哪里错了

i'd like two cups of tea for cooking vegetables.哪里错了
i'd like two cups of tea for cooking vegetables.哪里错了

i'd like two cups of tea for cooking vegetables.哪里错了
i'd like two cups of tea for cooking vegetables.
for改为when
意思是：我在做菜的时候需要两杯茶.
而不是：我做菜需要两杯茶.（for在这里的意思是：...用来做...)