教学目标
Teaching aims
通过本单元的教学，学生了解有关急救的常识，在生活中如何处理一些突发事件，然后实施紧急救护等总结，归纳情态动词的用法，如：should/shouldn"t；must/mustn"t；ought to等表示义务和责任的用法。
Teaching important and difficult points
1.Words
knee，still，bite（bit，bitten/bit），lay（laid，laid），mouth-to-mouth，bum，cut，electric，container，pool，breathe，within，handkerchief，wound，safety，wire，guard，sideway，firm，firmly wherever，stomach，injure，injured，injury，poison，quantity，nearby
2.Phrases
first aid，ought to，medical care，by mistake，pay attention to，in a short while，deal with，take it easy，running water，out of one"s reach，throw up，hold up
3.Useful expressionsWe must carry her to the side of the road.
You mustn"t move someone if they are badly hurt.
Parents should know some first aid.
You shouldn"t get up if you are badly hurt.
I ought to go home.
I have to cook supper for my grandmother.
4.Grammar
Revise Modal Verbs：must，shouldStudy Modal Verb：ought to
【教学建议】
课文建议
教师安排学生大声朗读课文，理解课文含义，通过阅读，教师对学生可小组讨论，提问，口语练习，复述急救方法等，教师给学生展示几组图片，帮助学生学会一般的急救措施和家庭安全常识。
写作建议
教师布置学生写作的题目及要求，教师给学生几分钟时间进行讨论，教师给学生一些关键的词语，如：breathe，First Aid Centre，handkerchief，mouth-to mouth and so on.之后，教师给学生十分钟左右时间开始写，最后教师请几位同学朗读，教师给予讲评。
教材分析
本单元是围绕First aid，Safety in the home，展开话题。对话课中描述两个学生在街上看到一个女孩从自行车上摔下来的经过，同时对话中使用了情态动词的用法，课文中附有图片和口语练习，帮助学生了解急救的重要性及有关的常识。
重点难点
1.What should you do if a person has drunk poison by mistake？假如有人误喝了毒药，你怎么办？
by mistake是固定词组，意为“错误地”，“无心地（做错了事）”。例如：She put salt in her cup of coffee by mistake．她错将盐放入咖啡里了。
2.do with，deal with二者都可以用来表示“处理”的意思
但是用于特殊疑问句的时候do with与what连用；deal with则与how连用。例如：你会怎样处理一个从自行车上摔倒而严重受伤的？
另外，do with还可表达别的意思。例如：What did you do with my umbrella？（=Where did you put my umbrella？）
你把我的伞放到哪里去了？
What are we to do with this naughty boy？（=How are we to deal with this naughty boy？）我们该怎样处置这个顽皮的男孩？
3.knock at，knock down&knock into的区别knock at指“敲打门窗”
I heard someone knocking at the door.我听见有人敲门。
Tom tried knocking at the window.汤姆试着敲了敲窗户。
knock down指“……撞倒”
He nearly knocked me down at the corner.在拐角处，他几乎把我撞倒。
He was knocked down by a car.他被汽车撞倒了。
knock into指“碰倒，撞上某人”，也可指“偶然碰见”。
The child knocked into the teacher.那孩子撞到了老师身上。
He knocked into the chair in the dark.黑暗中他撞在了椅子上。
He didn"t expect to knock into some of his friends here.他没有想到在这儿遇见一些朋友。
4.ask，demand，inquire，question&require
1）ask是一个常用词，表示“问”的意思。
Did you ask the price of that ten－speed bicycle？你打听过那辆十速自行车的价钱了吗？
2）demand含有强硬、断然的意味。
I demand that you leave this place at once.我要求你立即离开此地。
3）inquire多用于较正式的语体，通常只表示打听消息，寻求答案。
He inquired of the girl the way to the railway station.他问那女孩到火车站怎么走。
4）question常表示一连串问题，有时则有盘问，审问之意。
①The questioning of the prisoner went on for hours.对那个囚犯的审讯延续了好几个小时。
5）require有按照权利来“要求”或“命令”之意。
Since he was involved in the case，the court required his appearance.由于他与此案有关，法庭令他出庭。
5.breathe&breath
1）breathe是动词，是“呼吸”的意思。
He was breathing hard/heavily after racing for the train.他跑着赶上了火车，吃力地喘着气。
It is good to breathe fresh country air instead of city smoke.呼吸乡间新鲜空气而不吸入城市烟尘是有益的。
▲注意以下几个习语的意思：
1）I can"t concentrate with you breathing down my neck.你这样紧紧叮着我，使我精神无法集中。
2）Promise me you won"t breathe a word of this to anyone.答应我别将此事泄漏给任何人。
3）The new manager has breathed fresh life into the company.新经理给公司带来了朝气。
2）breath是名词，也作“呼吸”解。
1）You can see people"s breath on a cold day.冷天能看到人们呼出的空气。
2）His breath smelt of garlic.他呼出气中有蒜味。
▲注意以下习语的意思：
①Her smile is a breath of fresh air in this gloomy office.她的微笑给沉闷的办公室带来生气。
②Religion is the breath of life for her.宗教对她来说是不可缺少的精神支柱。
③It took us a few minutes to get our breath back after the race.赛跑后我们用了好几分钟才恢复了正常呼吸。
④The audience held their breath as the acrobat walked along the tightrope.杂技演员走钢丝时，观众们都屏住了呼吸。
⑤His heart condition makes him short（out）of breath.他心脏状况不佳使他呼吸急。
⑥He lost his breath in running.由于奔跑他几乎喘不上气。
语法：情态动词（Modal Verbs）
1.must
A.表示必须要干的事。如：
We must obey the rules．我们必须遵守规则。
You mustn"t talk like that．你可不能那样说话。
must也可以表达过去情况，主要用于间接引语中。
She said that we must wait a little while．她说我们必须要等一会儿。
B．表示一种推测（只用于肯定句中，语气比may要肯定得多）。
must have则表示对过去情况的推测。例如：This must be Tom"s room.这准是Tom的房间。
Jack must have gone there，hasn"t he？/didn"t he？杰克准是去过那儿了，对不对？
C．比较：have to也表示“必须”，但have to更强调客观需要，must着重说明主观看法。如：We had to be there at 10 o"clock．我们得在10点到那儿。（客观需要）
We must be back before 10 o"clock．我们必须10点前回来。（主观认为）
有时也可互换：
We must/have to leave now．我们得走了。
must和have to的否定式即mustn"t和don"t have to意思完全不同。Mustn"t表示“不作某事”，有禁止的含义；don"t have to表示“不必要（作某事）”，含有“客观上无此必要”的意思。例如：You mustn"t move someone if the person is badly hurt．如果这人受了重伤，你一定不要动他．The person isn"t hurt at all.You don"t have to give him first aid．这个人根本就没有受伤，你不必给他进行急救。
2.need作及物动词，和不定式连用：
need to do sth.需要干某事need也可做情态动词，主要用于否定句，即：needn"t＋v.不必干某事例如：You need to tell him the reason．你需要告诉他原因。
You needn"t tell him the reason.你不必告诉他原因。
情态动词need也可用于疑问句，肯定回答对一般must，否定回答时用needn"t．——Need I come？——Yes，you must．／No，you needn"t．【教学设计示例】
Teaching Aims
1.Practise the dialogue.
2.Study the uses of same of the modal verbs.
3.Study the language points in the lesson.
4.Do the discussion practice in Part
2.
Teaching Procedure
StepⅠRevision and Warm Up
1）Revise ailments and parts of the body.the following；toothache，earache，headache，and stomachache.Say to the class：I"ve got…and get them to complete the sentence.Point to parts of your body and say I"ve hurt my（arm/foot/leg/back/hand）。
2）You can ask the Ss for advice for all these ailments：ask what should I do？and encourage the class to make suggestions.
StepⅡPresentation
Tell the Ss a story by saying that this morning when I was on my way to school，I saw an accident in the street.A man was knocked down by a bike.He was injured on his knees.（Teach the new words injure and knee here.）Some people went to help and he was sent to the hospital soon.I think he will be all right soon.
