第71课第一部分的对话旨在复习 have to的基础上引出它的否定形式和与must在用法上的区别。第二部分是介绍有关系动词taste，look，seem，feel，be的用法。
第72课的第二部分是组句训练，主要是用于巩固第对课第二部分中所学的几个系动词。第三部分安排了一段颇有幽默感的病人和医生的对话，提醒大家注意饮食与健康的关系。第四部分的写作训练主要让学生运用已学过的有关看病就医的日常用语。
重难点及疑点分析
（－）重点、难点
A．单词及短语
trouble, cough, terrible, wake, asleep, plant, difficult, rich, angry, look over, fat, thin
asleep是形容词，意思是“睡着的”。表示“睡得很熟”用fast asleep或sound asleep，不用very asleep。asleep通常作表语，不作前置定语。
B．句子
1.Take this medicine three times a day.
2. Have a good rest and drink more water.
3. Last night, as soon as I fell asleep I dreamt that I went to the garden.
as soon as译为“－……就……”，常用来引导、个时间状语从句，其将来时用一般现在时来表示，主句用将来时。例如：
I will write to you as soon as I arrive in Beijing.
4. There s nothing much wrong with you.
5. I mean you eat too much food, and you don’t take enough exercise, too much后面跟不可数名词。too many后面跟可数名词的复数形式。much too后面跟形容词或副词，如too much time, too many books, much too clear, much too fast等。exercise在这里是“锻炼”的意思，是不可数名词，但具体指某一种“锻炼”用复数形式。如morning exercises，eye exercises。
6. No problem, doctor.
7. Do you remember your worst dream?
C．语法
1．情态动词have to的用法。
2．系动词的用法。
（二）疑点
A．单词及短语
smell, instead, stop. . . from doing…
1. smell是知觉性动词，相当于系动词，后面用形容词作表语。如：
This food smells good．
2. instead作副词，是“代替”、“顶替”的意思。如：
Mr. Wang is ill, I will take his class instead．
instead of为介词短语，它后面可跟名词、代词、动名词、介词短语或形容词等。如：
(1)I will clean the window instead of him.
(2)We will skate instead of playing football.
3. stop… from …意为“阻止（防止）……做某事”。如：
The heavy rain stopped them from going to school.
B．句子
1. She didn't feel like eating anything.
此句中的fee like相当于would like或want。feel like doing sth. = would like/want to do sth.
2. I had to sit down and rest every five minutes．
every five minutes指的是每5分钟。如：
He comes to see us every three days．
3. Let me take your temperature.
Let sb. do sth. 是一个固定的用法。
C．语法
1．have to与must的区别
（l）must表示主观，have to表示客观。
We must help each other.
My sister is ill, my mother has to look after her.
（2）inns一般表示现在时，而have to有多种时态。
2．系动词除了我们常用的be以外，还有become, turn, smell, taste, seem, sound, feel, look, go等。
口语训练
本单元的口语训练主要涉及“看病就医”的一些表达方法。学生第一次接触到这方面的内容，可能有一些难度。教师可先让学生听第69课第一部分的录音，听懂关键性的句子和短语。What’s the trouble? have a headache and a cough, take sb. to see a doctor，接着做第二部分的Puzzle dialogue，然后组织学生两人一组进行对话训练。在此基础上师生共同讨论对已学过的“看病就医”的表达法进行归纳。如：What’s the matter with you? /What’s wrong (with you)? /What’s the trouble (with you)? /feel like doing sth./have(get)a pain in/I don’t feel very well (any better) now./have a headache( cold/cough) /nothing serious/take one’s temperature/take sb. to see a doctor/take this medicine two( three/four) times a day/have a good rest/drink more water，最后学生分组编制生病或看病就医的对话。场景的设置可以在家中、医院或学校。教师可以根据实际情况叫几组学生在全班同学面前表演。
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