Unit 3 The environment第 2 课时 课文重难点句型讲解栏目导航巩 固 习 题1．The atmosphere around the Earth is necessary for all living things. 围绕地球的大气层对于所有的生物都是必需的。 sth. is necessary for sb. /sth. 对于……是必需的。例如： Oxygen is necessary for all forms of life. 氧气是一切生命所不可缺少的。 Petrol is necessary for ships to sail and planes to fly. 石油是船航行和飞机起飞的必需品。 【拓展】It’s necessary for sb. to do sth. 对于某人而言，干什么是必需的。例如： It’s necessary for us to take part in physical exercise. 参加身体锻炼对于我们而言是必需的。 It’s necessary for the government to take action to stop pollution. 对于政府而言采取措施阻止污染是必需的。 2．We should also recycle as many things as we can. 我们应该尽可能多地回收我们能回收的东西。 as…as we can 尽我们可能。例如： We shall try as much patience as we can, to explain it again. 我们会尽可能耐心地试着再解释一遍。 We must practise speaking English as much as we can. 我们必须尽可能多地练习说英语。 Everybody tries as hard as they can to save the sick boy. =Everybody tries everything they can to save the sick boy. 大家竭尽所能去救那个生病的男孩。 3．If we just learn to live in new and different ways, we can make a difference. 如果我们学会用新的不同的方式生活，我们就会与众不同。 make a difference（to sb./ sth.）（对……）有作用，有影响，相当于 have an effect（on sb./ sth.）。例如： The easiest way to make a difference is not to throw rubbish away. 做到与众不同的最简单的方法就是不要扔垃圾。 It doesn’t make a difference to you, does it? 这对你们没多大影响，对不对？ 巩 固 习 题一、根据课文内容，用所给单词的适当形式填空（未提供单词的，限填一词），使文章意思完整、正确。 Our world is in danger. We are facing many problems now. The atmosphere around the Earth is necessary for all ...
