Module 3 Unit 2 We have not found life on any other planets yet.知识点课件2022-2023学年外研版英语八年级下册

初中英语 八年级下册 WY Module 3 Journey to space Unit 2 We have not found life on any other planets yet. 1 Scientists think that there has been life on the earth for hundreds of millions of years.科学家们认为地球上的生命已有数亿年的历史。(教材P20) &1& there has/have been 已经有……&2& &3& 是there be句型的现在完成时结构，遵循"就近原则"，即谓语动词的数与句子主语保持一致。 There have been great changes in our country in the last ten years.在过去的十年里，我们国家发生了巨大的变化。 Language points 2 &4& there be的一般将来时结构为：there will be 或 there is/are going to be。 Let's remember that there will be obstacles in our life. We must face them bravely and solve them. 让我们记住我们的生活中会有障碍。我们必须勇敢地面对并解决它们。(河北中考) Language points 3 &5& on the earth = on earth 在地球上；在世界上 I want to know about the history of life on the earth. 我想了解地球上的生命史。 She must be the happiest person on the earth. 她一定是世界上最幸福的人。 &6& on earth用于口语中，意为"究竟，到底"，常用于疑问词后加强语气。 What on earth is the problem?到底是什么问题？ Language points 4 &7& hundreds of millions of 数以亿计的 The system can store hundreds of millions of facts about people, places and events. 这个系统可以储存上亿条与人物、地点和事件相关的信息。 Language points 5 (1) hundreds of "成百上千的" 后均接可数名词复 数，表示概数 thousands of "数以千计的，成千上万的" millions of "数以百万计的" billions of "数以十亿计的" The village is hundreds of years old. 这个村子有数百年的历史。 (2)当hundred、thousand、million、billion 与具体数字连用时，其后不加s，且其后不接of。 There are two thousand people in the meeting room. 会议室里有两千人。 Language points 6 Seven other planets also go around the sun. 还有七颗行星也绕着太阳转。(教材P20) &9& 基数词+other+可数名词复数 &10& 为常用结构，意为"再/又……"，其中other可以用more替换。"基数词+other/more+可数名词复数"相当于"another+基数词+可数名词复数"。 I have two other/more questions to ask you. = I have another two questions to ask you. 我还有两个问题要问你。 Language points 7 none /nʌn/ pron. 没有一人；没有一个；一点儿也没有 &12& none与no one None of them has an environment like that of the earth, so scientists do not think they will find life on them.这些行星中没有一颗有像地球那样的环境，因此科学家们认为他们不会在它们上面发现生命。(教材P20)