福建省莆田市第七中学仁爱版九年级英语上册：Unit 2 课件 (11份打包)

Unit 2 Saving the Earth Topic2 All these problems are very serious. Section A pollution many trees cut down forests gone wash the earth away 冲走 change into desert 转换成，变成 沙漠 e.g. A lot of rich land has changed into desert because people have cut down too many trees. sandstorms come into being n. 沙尘暴 The boy and girls are talking about —————. different types of sandstorms the reasons for sandstorms sandstorms in different cities 1b Listen to 1a and choose the best answer. Focus on the main idea of the conversation when you listen for the first time. √ 79.unknown Listen and answer the questions 1.What’s the weather like today ? It’s bad. The wind is so strong . And the sand really hurts face. 2.What causes these sandstorms ? People have cut down too many trees. As a result, a lot of rich land has changed into desert. 3.Do we still need to do something to protect the environment ? Yes, we do. Although we have built “The Green Great Wall”, we still need to do something to protect the environment . conj. 虽然，尽管，即使 n.沙 103.unknown somebody, someone, something, somewhere anybody, anyone, anything, anywhere none, nobody, nothing, nowhere everybody, everyone, everything, everywhere 一般情况下用于肯定句 一般情况下用于否定句和疑问句 表否定含义 可用于各种句式 the indefinite pronoun and adverb 1.I have ____ to tell you. A. important something B. something important B 形容词修饰不定代词和不定副词时，要放在不定代词/不定副词之后 Do you know? 2.Everybody ___ ready for the match. A. is B. are A 不定代词作主语时，谓语动词要用单数。 1a Listen, look and say. 118.unknown 1c Read 1a and complete trees’ functions. Trees can stop the wind from blowing the earth away. A lot of water can be saved by forests. They can also stop the water from washing the earth away. Tree’s functions K: wind; sand; anything M: sandstorms J: cut down; as a result; change into M: affect J: stop…from…; blow… away K: can be saved J: wash … away K: is harmful to; although; do something Act out the dialog in pairs 2 Complete the