1.It takes time/money (for sb./sth.) to do sth.:Ittakes hundreds of years for plastic to break down (塑料 需要几百年才能分解)... 2．倍数句型:However, making a paper bag usesfour times as much energy as making a plastic bag (所消耗的能量是制作塑料袋的四倍) and up to three timesthe amount of water. 3．强调句型:It is the production of food, not its transport ,that(是食物的生产而不是食物的运输)uses most ofthe energy and produces most of the greenhouse gases.