高中英语unit2workingthelandpartivusinglanguage学案无答案新人教版必修4

Unit 2 Working the land Part IV Using language1、 学习目标 1. To improve the ability of reading.2.To grasp the two reading techniques(技巧) : a.略读或浏览阅读 b. 扫描式阅读二、自主预习Step1: Reading(A pioneer for all people) 1. Skimming: Read the text silently and quickly. Underline the topic sentence of each paragraph and get the main idea of the paragraph. (方法引导：略读或浏览阅读，忽略不懂的句子和生词，快速阅读原文，目的只是为了了解阅读材料店内容大意，题目的作用不可忽略)2. Scanning: Read the text quickly and then answer the following questions. (方法引导：先看题，再快速阅读文章，找出题目答案，要带着问题，有目的地阅读)Q1. Why are chemical fertilizers so popular in farming today?Q2. What problems can be caused by using chemical fertilizers?Q3. What is organic farming?Q4. What are the advantages of organic farming?Q5. What ways does organic farmers use to keep the soil fertile?Q6. What is the main reason for using organic farming methods? 三. 合作探究Step1: Key phrases1. 增加产量 2. 被冲走 1. 增加,加强 4. 导致癌症 5. 此外,另外 6. 转向有机农业 7. 专注于保持土壤肥沃与免受疾病 8. 减少疾病 9. 种庄稼/作物 10. 每隔几年 11. 富含矿物质_ 12. 防止风和水带走土壤 13.保持土壤肥沃_ 14. 有同样的目标 14. 避免破坏环境和危害健康 Step2: Sentence patterns 1. Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and, even more dangerous, to peoples health. 然而，最近科学家发现长期使用这些化肥会造成土地受损，甚至更危险的是，会对人们的健康造成危害。 It has been raining for many days. 雨已经下了好多天了。I have been learning English since five years ago.自从五年前以来我一直在学英语。have/has been doing是_时，意思是_, 表示一个动作从过去某个时候开始一直持续到现在，还有可能继续持续下去。实战演练1).I wont tell the student the answer to the maths problem until he it for more than an hour. (work) 我不会告诉那个学生答案直到他计算了一个小时后。2).Janes eyes are red. She . (cry)简的眼睛是红的。她一直在哭。2. Crops such as peas or soybeans put important minerals back into the soil, making it ready for crops such as wheat or corn that need rich and fertile soil. 像豌豆或大豆这样的农作物将重要的矿物质带回土壤，从而使之适宜于种植要求土壤肥沃的农作物，比如玉米或小麦。句法分析 making it ready for crops 为现在分词作 ；that need rich and fertile soil为 从句，修饰 。 实战演练1).World Cup is held in many countries, _ in the world. (make)世界杯在许多国家的举行，使得它成为了世界上最受欢迎的运动之一。Crops such as peas or soybeans put important minerals back into the soil, making it ready for crops such as wheat or corn that need rich and fertile soil.像豌豆及大豆等农作物把重要的矿物质带回土壤，为需要养料的农作物做好准备，例如小麦或玉米。His parents died, leaving him an orphan. 他的父母去世了，结果使他成为孤儿。He hurried to the cinema, only to be told the tickets had been sold out.他匆忙赶到电影院，结果被告知票卖完了。making it短语为现在分词作_. 现在分词做结果状语表示_; 不定式做结果状语常与_连用，表示_.(1) 在这么黑的晚上她没有回家，使得她父母很担心。(worry)She didnt come back in such a dark night, _.(2) 我们好不容易到达了那个小山村，结果发现那位老人已经去世了。(pass)We finally arrived at the small village, only _.3. Organic farmers also plant crops to use different levels of soil, for example, planting peanuts that use the grounds surface followed by vegetables that put down deep roots.有机耕作的农民还种植多种农作物来利用不同层次的土壤。比如，他们先种植生长于浅层土壤的花生，然后在种植生根于深层土壤的蔬菜。句法分析 不定式to use different levels of soil在句中作 ， that use the grounds surface和that put down deep roots为 从句，分别修饰先行词 和 。 实战演练1).The company _ has named a famous actor a