Listening and vocabulary教案1

Module 2 No Drugs Teaching goals 教学目标

1. Target language 目标语言

a. 重点词汇及短语

bronchitis, burglary, cancer, cigarette, tobacco, injured, danger, ban, horrible, affect b. 重点句式 P18 I don’t agree with you. / I totally agree with you. / I couldn’t agree more.

I’m not sure I agree with... That’s a good point.

I’m not sure about that.

You can’t be serious.

I completely disagree. 2. Ability goals能力目标

Enable the Ss to discuss the dangers of smoking. 3. Learning ability goals 学能目标

Help the Ss learn how to talk about the dangers of smoking and taking drugs. Teaching important & difficult points教学重点和难点

Make sure the Ss realize smoking is harmful to health. Teaching methods 教学方法

Discussion. Teaching aids 教具准备

A multimedia computer and a recorder. Teaching procedures & ways 教学过程与方式

Reading This passage on page 75 is about drug use in the UK. First ask the Ss to look through the passage and match the headings with the paragraphs. Then show them some figures and ask Ss to find out what these figures refer to in the article and at last answer some questions. T: We have read two passages. One is A Story of a Drug Addict, the other is the Dangers of Using Cocaine. From the two passages we can see the bad effect of drug use. So we should be far away from it. The passage we’ll read today is about drug problem in the UK. Now read it quickly and match the five headings with the paragraphs. After a few minutes. T: Have you finished? Ss: Yes. Ask one or two Ss to present their answers and then check the answers with the whole class. T: Now, I’ll show you some figures. What I want you to do is to find out what these figures refer to. Finish it as quickly as you can. Show the following figures on the screen. 30%, 35%, one in twelve, 500,000, ￡390 million, ￡3,000, 3,800 Note: Tell the Ss not to use the sentences directly from the passage. They should make a change. They shouldn’t say: Drug use in Britain has increased by 30% in the last five years. They should say: 30% refers to the increase of drug use in Britain in the last five years. Give the Ss some help

when necessary. After a few minutes, collect answers from the whole class. T: Now please answer the questions in Ex. 10 on page 76. Find the answers quickly. Then talk about the answers with your partners. Step IV Extra-reading Show some other passages about drug use on the screen. Background Cocaine, the most potent stimulant of natural origin, is extracted from the leaves of the coca plant. It was originally used in South America in the mid-19th century by natives of the region to relieve fatigue. Pure cocaine (cocaine hydrochloride) was first used as a local anesthetic for surgeries in the 1880s and was the main stimulant drug used in tonics and elixirs for treatment of various illnesses in the early 1900s. Crack, the freebase form of cocaine, derives its name from the crackling sound made when heating the sodium bicarbonate (baking soda) or ammonia used during production. Crack became popular in the mid-1980s because of its immediate high and its inexpensive production cost. Cocaine most often appears as a white crystalline powder or an off-white chunky material. Powder cocaine is commonly diluted with other substances such as lactose, inositol, mannitol, and local anesthetics such as lidocaine to increase the volume of the substance and the profits of the drug dealers. Powder cocaine is usually snorted or dissolved in water and injected. Crack, or “rock”, is most often smoked.

Effects The effects of cocaine normally occur immediately after ingestion and can last from a few minutes to a few hours. The duration of the drug’s effects depends on how it is ingested. Snorting cocaine produces a slow onset of effects that can last from 15 to 30 minutes, while the effects of smoking cocaine last from 5 to 10 minutes and produce a more intense high. Cocaine produces euphoric effects by building up dopamine in the brain, causing the continuous stimulation of neurons. Users often feel euphoric, energetic, talkative, and mentally alert after taking small amounts of cocaine. Cocaine use can also temporarily lessen a user’s need for food or sleep. Short-term physiological effects include constricted blood vessels, dilated pupils, increased temperature, heart rate, and blood pressure. Ingesting large amounts of cocaine can intensify the user’s high, but can also lead to bizarre, erratic, and violent behaviors. Users who ingest large amounts may experience tremors, vertigo, muscle twitches, and paranoia. Other possible effects of cocaine use include irritability, anxiety, and restlessness. Cocaine is a powerfully addictive drug. A tolerance is often developed when a user is seeking to achieve the initial pleasure received from first use, increases the dosage to intensify and prolong the euphoric effects.