译林版牛津英语8B unit 8单元知识点总结及测试卷.doc

8B Unit 8 A green world 单元重点知识点总览 1.We can reduce air pollution by riding bicycles.我们可以通过骑自行车减少污染。 reduce 及物动词，“减少”。如 Giving up smoking reduces the risk of heart disease. 戒烟会减少得心脏病的风险。 2.We can save water by taking shorter showers.我们可以通过洗更短的淋雨节省水。 save 动词，“节约，节省，save water 如 It’s necessary for us to save water. 节约用水对我们来说很有必要。 3.My dad used to drive me to school, but now we take the underground.我的爸爸过去常常开车送我去上学，但 （1）used to 表示“过去，后接 to do sth “过去常常做某事”。 He used （2）be used to doing sth “习惯。 The old man is used to living alone.这位老人习惯于一个人生活。 【拓展】be used to 后面也可接动词原形，即被，是相当于如 The material is used to make a plane. 这材料是用于制造飞机的。 5.More and more families own cars and this causes serious air pollution.越来越多的家庭拥有汽车，这导致严重的空气污染。 （1）cause使（某事）发生引起 his disease can cause blindness. 这种疾病可能会导致眼睛变盲。 （2）more and more 越来越 At present, more and more people are using computers 现在，越来越多的人使用电脑。 6.It is beautiful, and we should try to keep it that way. 它很漂亮，我们 try to do sth “设法做”，表示不管 【拓展try doing sth “试一试”，表示 7.For example , we are not allowed to cut down tree.例如，不允许我们砍树。 （1）for example 例如 （2）allow动词，意为允许，常用于 sb. to do sth结构，意为允许。 My parents wouldn’t allow me to go to the party. 8.We depend on its rich resources to live, so it is important for us to protect it wisely.我们依靠它（大自然丰富因此 depend on 依靠，依赖 He will depend on their parents for a long time. 他将依靠他的父母太长的时间。 语法：一般将来时的被动语态 一般将来时的被动语态有两种构成形式： 1、will + be done表示“将会被……”。其否定式是在will后面加not，疑问句式是将will提至主语前。 主动句： Our college will send her to Oxford University. 被动句： She will be sent to Oxford University by our college. 否定句： She will not be sent to Oxford University by our college. 疑问句： --Will she be sent to Oxford University by our college? --Yes, she will. / No, she will not. 2. be going to + be done表示“准备被……，打算被……”。其否定形式是在be going to中的be后加not，疑问句式是将be提至主语前。 主动句： They are going to invite you to the party. 被动句： You are going to be invited to the party by them. 否定句： You are not going to be invited to the party by them. 疑问句： --Are you going to be invite