(老师)州牛津版七年级英语下册unit1--unit4讲义 - 副本 - 加答案副本.doc

Module 2 Unit 2 Trees in our daily lives 学习目标 1 掌握本单元的重点单词、短语 理解课文内容。 2 语法点：一般现在时。 Reading Trees in our daily lives Rebecca wants to know more about trees and how they help us. She is interviewing Dr Jones about tress. Rebecca: how do trees help us, Dr Jones? Dr Jones: they help us in many ways, they keep the air cool and clean. They take in harmful gases from the air and produce oxygen for us to breathe. They’re major fighters against air pollution. Rebecca: I know trees also make our lives more convenient. Many of the things in our daily lives come from trees, for example, paper and pencils. Dr Jones: You’re right, Rebecca. In fact, we get a lot more from trees. We get fruit and oil from them. Tea also comes from the leaves of trees. Look around this room. A lot of the furniture is made of wood. Trees are really important in our daily lives Rebecca: I can’t imagine a world without trees. Dr Jones: But we cut down millions of trees every year. We should stop doing this if we don’t want a world without trees. 语法点 一般现在时 一、 定义与讲解 一般现在时：表示经常性的事情，经常性的动作或一般性事实。 时间状语：often 经常，usually通常，always 总是，every每个，sometimes 有时，at …在几点钟只有在第三人称单数用动词的“三单变化”，其他用动词的原形。 三单变化：1.多数在动词后＋s???? play — plays? like — likes （1）直接在动词词尾加-s.ask---asks???? work---works? get---gets????? stay---stays （2）以字母s, x, ch, sh或o结尾的动词，在词尾直接加-es. watch---watches?? wish---wishes? fix---fixes?? do---does　　go---goes????? pass---passes （3）以“辅音字母加 - y”结尾的动词，要先变y为i再加-es.　　try---tries???? study---studies cry---cries????? fly---flies2.不规则变化：　　be---- is? are??? have----has 　二、一般现在时用法 1. 表示经常性，习惯性,永久性的动作或存在的状态.通常与副词sometimes, often, usually, always, every day (year, month ), once (twice, three times) a day,等时间状语连用。　　They usually go to school by bike.　　I take the medicine three times a day.　　She helps her mother once a week.　　Mary’s father is a policeman.　　There are 50 students in my class.2. 表示客观真理，科学原理，自然现象，等客观事实或格言，谚语等。　 The sun rises in the east and sets in the west every day.　 The man who has never b