Living With disease（The First Period）

unit 7 living with disease

  i.brief statements based on the unit
    this unit mainly talks about deadly diseases and attitudes towards aids，cancers，
  etc.a11 the activities，including warming up，listening，speaking，reading and writing，center on this topic.through this topic，the students not only get more information about diseases，but also learn how to keep a right  and positive attitude towards diseases and people with diseases.
    in addition，the students can 1earn some useful language points through the materials provided  in  each part，especially a lot of words and phrases，which are very helpful for the students to build up vocabulary about diseases.the grammar--the subjunctive mood is also important.the given materials and exercises give the students an opportunity to learn grammar by using it.it helps the students learn to talk about things t}lat are not certain to happen as well as imaginary or unreal events and situations.
    all of the activities are helpful for the students to improve their knowledge about 1anguage and their skills to use language.
  ⅱ.teaching goals
  1.talk about deadly diseases and attitudes towards aids，cancers，etc.
  2.practise talking about imaginary  situations.
3.practise supporting and challenging an opinion.
4.learn to use the subjunctive m00d(1)：lf 1 were you，…i wish i could…
5.write a personal narrative.
ⅲ.teaching time：four periods
ⅳ.background information
1.health officials struggle to understand sars   sever  acute  respiratory  syndrome (sars) has terrified the world.the question on everybody’s mind is whether sars will become a global epidemic.
    researchers worldwide have galvanized to combat sars.the challenge for public
health is to determine the nature and potential of any viral threat and to frame a battle plan.
    “we are in an evolutionary stage of this epidemic，”said anthony fauci, director of the national institute of allergy and infectious  diseases  in  bethesda，maryland. “it could plateau，go up and down，disappear of explode.this virus is highly virulent，potentially lethal and highly transmissible--it has the potential to cause a really bad epidemic.”
a deadly combination
    sars is a so—called hybrid virus—the kind that always triggers a red alert.traditionally a virus affects a single species.but sometimes two viruses combine their genetic material and form a new virus that“ jumps” to another species altogether.