标签：人教版高二英语教案范文,高二英语教案下载,暂无联系方式
高二Unit 7 教案,
VI. Homework
1. Preview grammar
2. Finish word study exercises on SB and WB
The Sixth Period
GOALS: ?
To learn the Subjunctive Mood ?
To make students get familiar with the Subjunctive Mood and master it by using it in different situations
TEACHING PROCEDURES
I. Lead-in
1) Show students the picture of Xiaohua and ask them two questions:
Q1. You must be quite familiar with this girl now, right? (Right. She is a Xiaohua, a girl who has been infected with AIDS.)
Q2. How was she infected with AIDS? (She was infected by birth.)
2) Xiaohua was born dying and she has no choices. But many people who really have many choices don?t realize how precious life is and do a lot of harms to themselves.
1. Show students some pictures of people who smoke a lot, drink a lot or even have drugs, pointing out all these can lead to deadly disease.
高二Unit 7 教案由www.qidian55.com收集及整理,转载请说明出处www.qidian55.com
www.qidian55.com
2. Based on the above talking, teacher raise the following questions: If they go on doing this, what would happen? If you were Xiaohua, what would you like to tell them? If you were a doctor, what would you do? If you were one of them, what would you do?
3. Some people do not take Xiaohua or doctor's advices. Finally, they die. If they had not drunk so much wine, he would not have died at such an early age. If he had (not)..., he would (not) have... Ask students to make more similar sentences, using the Subjunctive Mood.
II. More Situations
1. The woman in the picture is Helen, who has been living with AIDS for many years. Now she is celebrating her birthday with her dog. If you were Helen, what kind of wishes would you make?
2. It is said that a falling star can let your dream come true. If you saw a falling star, what kind of wishes would you make?
3. Besides a falling star, a magic lamp can also let your dream com true. If you had a magic lamp, what would you ask it to do for you ?
III. Homework
1. Finish all the grammar exercises on SB and WB
2. Review the whole unit
IV. Background Information 背景知识
What is AIDS? --http://www.aids.org/factSheets/index.html#Preventing WHAT DO "AIDS" MEAN? AIDS stands for Acquired Immune Deficiency Syndrome: ? Acquired means you can get infected with it; ? Immune Deficiency means a weakness in the body's system that fights diseases. ? Syndrome means a group of health problems that make up a disease. AIDS is caused by a virus called HIV, the Human Immunodeficiency Virus. If you get infected with HIV, your body will try to fight the infection. It will make "antibodies", special molecules that are supposed to fight HIV. When you get a blood test for HIV, the test looks for these antibodies. If you have them in your blood, it means that you have HIV infection. People who have the HIV antibodies are called "HIV-Positive". Fact Sheet 102 has more information on HIV testing. Being HIV-positive, or having HIV disease, is not the same as having AIDS. Many people are HIV-positive but don't get sick for many years. As HIV disease continues, it slowly wears down the immune system. Viruses, parasites, fungi and bacteria that usually don't cause any problems can make you very sick if your immune system is damaged. These are called "opportunistic infections" (see Fact Sheet 500). HOW DO YOU GET AIDS? You don't actually "get" AIDS. You might get infected with HIV, and later you might develop AIDS. You can get infected with HIV from anyone who's infected, even if they don't look sick, and even if they haven't tested HIV-positive yet. The blood, vaginal fluid, semen, and breast milk of people infected with HIV has enough of the virus in it to infect other people. Most people get the HIV virus by: ? Having sex with an infected person. ? Sharing a needle (shooting drugs) with someone who's infected ? Being born when the mother is infected, or drinking the breast milk of an infected woman. Getting a transfusion of infected blood used to be a way people got AIDS, but now the blood supply is screened very carefully and the risk is extremely low. There are no documented cases of HIV being transmitted by tears or saliva, but it is possible to be infected with HIV through oral sex or in rare cases through deep kissing, especially if you have open sores in your mouth or bleeding gums. In the United States, there are about 800,000 to 900,000 people who are HIV-positive. Over 300,000 people are living with AIDS. Each year, there are about 40,000 new infections. In the mid-1990s, AIDS was a leading cause of death. However, newer treatments have cut the AIDS death rate significantly.
IS THERE A CURE FOR AIDS? There is no cure for AIDS. There are drugs that can slow down the HIV virus, and slow down the damage to your immune system. But there is no way to get all the HIV out of your body. There are other drugs that you can take to prevent or to treat opportunistic infections (OIs). In most cases, these drugs work very well. The newer, stronger anti-HIV drugs have also helped reduce the rates of most OIs. A few OIs, however, are still very difficult to treat.
HOW CAN YOU PROTECT YOURSELF AND OTHERS? Unless you are 100% sure that you and the people you are with do not have HIV infection, you should take steps to prevent getting infected. This fact sheet provides an overview of HIV prevention, and refers you to other fact sheets for more details on specific topics. Sexual Activity You can avoid any risk of HIV if you practice abstinence (not having sex). You also won't get infected if your penis, mouth, vagina or rectum doesn't touch anyone else's penis, mouth, vagina, or rectum. Safe activities include kissing, erotic massage, masturbation or hand jobs (mutual masturbation). Drug Use If you're high on drugs, you might forget to use protection during sex. If you use someone else's equipment (needles, syringes, cookers, cotton or rinse water) you can get infected by tiny amounts of blood. The best way to avoid infection is to not use drugs. Vertical Transmission With no treatment, about 25% of the babies of HIV-infected women would be born infected. The risk drops to about 4% if a woman takes AZT during pregnancy and delivery, and her newborn is given AZT. The risk is 2% or less if the mother is taking combination antiviral therapy. Caesarean section deliveries probably don't reduce transmission risk if the mother's viral load is below 1000. Contact with Blood HIV is one of many diseases that can be transmitted by blood. Be careful if you are helping someone who is bleeding. If your work exposes you to blood, be sure to protect any cuts or open sores on your skin, as well as your eyes and mouth. Your employer should provide gloves, facemasks and other protective equipment, plus training about how to avoid diseases that are spread by blood.
上一页 [1] [2] [3] [4] [5] 下一页
，高二Unit 7 教案
