Elton John.
The gala has seen impromptu performances by stars such as Sir Elton John, Robin Williams, Natalie Cole, Liza Minnelli, Sheryl Crow, Ringo Starr, Lionel Richie, Macy Gray, Shirley Bassey, and Milla Jovovich. The 2006 live auction, conducted by Harvey Weinstein and Sharon Stone, raised $2 million, bringing the event’s fundraising total to $4 million. 5. Based on the text, decide whether the following statements are true (T) or false (F) in the text.
(F)1) Now scientists can produce an “after-exposure” lotion to protect against HIV and AIDS.
(T)2) When they are injured, the frogs have special glands release a chemical to protect them from infection.
(F)3) The difference between the chemical and other substances that destroy viruses is that the chemical can kill HIV particles.
(T)4) Peptide is a chemical which can destroy viruses, but leave the membrane of the immune cells unharmed.
(T)5) Researchers found that the chemical could block infection by stopping the viruses being passed between cells.
(T)6) Scientists hope to develop a cream which could treat the infected cells hours after they were exposed to HIV.
(F)7) The first generation of the products could be applied or taken after sex for HIV protection.
(T)8) The rainforests in Australia where the red-eyed tree frogs live have been seriously destroyed.
6. Read and discuss the new words and phrases of this passage. Assignments:
1. Recite the new words and phrases.
2. Prepare Passage A
The Second Two Periods
Ⅰ.Teaching Aims
1. Undertake a detailed learning of the new words and phrases.
2. Study the text in detail.
Ⅱ. Key Points: Important words, phrases and sentences Ⅲ. Difficult Points
Try to understand some difficult sentences:
1. It is thought to work by damaging the membrane of each viral particle, either by punching holes which cause it to fall apart, or through a “detergent effect” which breaks apart fatty molecules in the membrane. 2. We imagine something preventive so if you were exposed to HIV through unprotected sex, you could use this cream or a suppository to give you a fairly high dose of the proteins in the region where you thought the virus might be.
Ⅳ. Teaching methods
presentation, task-based approach, situational teaching, discussion, group study.
V. Teaching Procedures
1. Review the new words and phrases.
2. Study passage A in detail and deal with the language points
1). Its natural ability to block infection by HIV virus gives some hints to scientists who are developing medicine to protect human beings from AIDS.
①block vt.: to stop or impede the passage of or movement through妨碍，封锁，阻塞
e.g. Get back, don’t block the traffic. 往后退，不要阻塞交通。 Translation
他跳到足够的高度以拦截对方射门。 He jumped high enough to block jump shots.
②hint n.: a suggestion or implication given in an indirect or subtle manner暗示, 提示, 线索
e.g.He gave me a hint with the eyes that I should leave as quickly as possible. 他以目示意我尽快离开。
Translation 他口风很紧。
He was closemouthed and didn’t drop a hint.
2). Special glands on their skin produce and store packets of the compound, which is released when they are injured or alarmed and acts to protect them from infection by killing bacteria and viruses. (Para. 2) ①injure vt.: to cause physical harm to sb. or to yourself, for example in an accident or an attack 受伤；伤害 e.g.His internal organs were injured. 他的内脏受了伤。 Translation
一枚炸弹在大使馆爆炸，伤了几个人。
A bomb exploded at the embassy, injuring several people. ②alarm vt.: to make sb. worried or frightened使惊慌 e.g.I didn’t want to alarm him by telling him that she was ill. 我不想告诉他她病了，让他惊慌。 Translation
我踩断了一根树枝, 把那头鹿吓惊了。
The breaking of a branch under my foot alarmed the deer.
3). The ability to target HIV was discovered when researchers at Vanderbilt University in Nashville, Tennessee, decided to investigate whether the chemical was effective against viruses that infect humans. In tests using human immune system cells, the chemical killed HIV particles but left the immune cells unharmed. (Para. 3)
①investigate vt.: to examine a crime, problem, statement, etc. carefully, especially to discover the truth 调查，审查
e.g.Police are investigating allegations of corruption involving senior executives. 警察正在调查涉及高级管理人员腐败的陈述。
Translation
我们在调查这种错误究竟是如何产生的。
We are investigating how an error like this could have occurred. ②leave sth. done: to allow sth. to be or remain in a specified state 使……处于某种状态
e.g.He is not such a man as would leave his work half done.
他不是那种做事半途而废的人。 Translation
别忘记把食物盖上。 Don’t leave food uncovered
4). It is thought to work by damaging the membrane of each viral particle, either by punching holes which cause it to fall apart, or through a “detergent effect” which breaks apart fatty molecules in the membrane. (Para. 3)
fall apart: to break; stop working 破碎，散开; 终止
break apart: to take apart into its constituent pieces使……分裂开 e.g.My poor old boots are falling apart. 我可怜的靴子就要散架了。 Translation
由于缺少资金，这项交易终止了。
The deal fell apart because of a lack of financing.
5).There are lots of substances which destroy viruses but the trick is finding one that doesn’t also destroy the membrane of our cells. (Para. 4) substance n.: material with particular physical characteristics 物质 e.g.an organic substance 有机物质 a chemical substance 化学物质 Translation
哪种物质能够承受那样的温度？
What sort of substance could withstand those temperatures?
6).The virus appeared to have vanished. (Para. 5) vanish vi.: to disappear消失
e.g. The child vanished while on her way home from school.
孩子在放学回家的路上失踪了。 Translation