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Unit 18 Seeing the doctor,
He is a kind man and often gives too much but gets too little. 他是个好心人，经常付出的多而得到的回报少。
2. instead / instead of
instead与instead of都有“代替”之意，instead 后不跟其它成分，通常置于句末作状语；而instead of后常跟名词、代词、v-ing形式或介词短语等。如：
Why don’t you come and play volleyball instead? 你们为什么不来改打排球呢？
We can use the USA instead of America. 我们可以用the USA来代替America.
He went to school on foot instead of by bike yesterday. 昨天他步行去上学，没有骑自行车。
Jim likes swimming instead of skating. 吉姆喜欢游泳，而不是滑冰。
疑难解析
1. What’s the trouble？你怎么了？
这是口语中常用的句子，常用于询问对方身体哪里不舒服或发生了什么不幸的事。类似的句子还有：What’s the matter (with you)? 或What’s wrong (with you)?
trouble名词，意思是“烦恼，苦恼，忧虑，困难”。常见的搭配有：go to the trouble“不辞辛劳地做某事”；get into trouble“陷入困境，惹麻烦”；be in trouble“处于不幸／苦恼／困境之中”。例如：
My teacher went to the trouble of teaching us.我的老师不辞劳苦地教我们。
They got into trouble when they climbed that hill yesterday.昨天他们爬山时陷入了困境。
He is always ready to help others when they are in trouble.当他们处于困境时，他总是乐于帮助他们。
2. I had to sit down and rest every five minutes． 每五分钟我就得坐下来休息一会儿。
every形容词，意思是“每个”，同数词连用时，名词可以有复数形式。表示“每……，每隔……的”。例如：
He comes every three days. 他每隔两天来一次。（他每三天来一次。）
She goes to Beijing every other year. 她隔年去一趟北京。
3. Last night, as soon as I fell asleep I dreamt that I went to the garden.昨天夜里我一睡着就梦见我到花园里去了。
1）as soon as是连词，引导时间状语从句，表示“一……就……”。如：
It began to snow as soon as I got home. 我一到家里就开始下雪了。
He will call you as soon as he arrives. 他一到就会给你电话的。
2）fall asleep 意思是“入睡的，睡着的”，fall在此是连系动词，后常跟asleep或ill作表语。如：
Unit 18 Seeing the doctor由www.deyou8.com收集及整理,转载请说明出处www.deyou8.com
He was too tired, so he fell asleep very soon. 他太累了，因此很快就睡着了。
类似的词还有before, after, until, when等。当主句是一般将来时态时，时间状语从句必须用一般现在时态。
3）…that I went to the garden. 这是由that引导的从句作宾语，叫做宾语从句。如：
He said that he could not sleep well. 他说他睡不好。
4. They taste delicious. 它们吃起来很香。
taste是系动词。常用的系动词有：be, look, seem, feel, smell, sound, get, become等，系动词后常用名词、形容词、副词和介词短语作表语。例如：
(1) The teacher seems angry. 老师似乎生气了。
(2) The food smells good. 食物闻起来很香。
(3) It’s getting colder. 天气变冷了。
have to 用法分析
have to是情态动词，意思是“必须；不得不”，表示客观要做的事情，后接动词原形。
一、have to的单数和复数
have to虽是情态动词，但有人称或数的变化。一般现在时第三人称单数用has to，其他人称用have to。例如：
You have to go with Tom．你得跟汤姆去。
She has to answer this question. 她不得不回答这个问题。
二、have to的肯定式
have to的肯定式由“have to+动词原形”构成。例如：
I have to tell him the news.我得告诉他这个消息。
She has to walk home．她不得不走回家。
三、have to的否定式
have to的否定式由“don’t have to+动词原形”或“doesn’t have to+动词原形”构成。例如：
You don’t have to do like this.你不必这样做。
He doesn’t have to be there on time. 他不必按时到那里。
have to的否定式还可在have／has后面加not （仅限于一般现在时和一般过去时）。例如：
He hasn’t to go there.他不必去那里。
I haven’t to get up early.我不必早起床。
四、have to的疑问式
have to的一般疑问式通常由“Do/ Does + 主语+nave to+动词原形+其他成分”构成，肯定回答用do或does；否定回答用don’t（have to）或doesn’t（have to）。例如：
①–Do you have to go now?你现在就得去吗？
–Yes, I do.是的。
②–Does he have to hay home? 他必须留在家里吗？
–Yes, he does. 是的。
（No, he doesn’t (have to) . 不，他不必留在家里。）
五、have to的时态
have to可用于各种时态。其一般过去时的肯定式是had to，否定式是didn’t have to；一般将来时的肯定式是will have to，否定式是won’t have to。例如：
He said he had to see me about something important．他说他有重要的事情不得不见我。
He said they didn’t have to borrow 200 yuan from John．他说他们不必向约翰借二百元。
You will have to do that again．你得重做那件事。
She won’t have to go with you. 她不必跟你去。
六、have to与 must的区别
1．have to有人称和数的变化，即第三人称单数用has to，其他人称用have to；而must没有人称或数的变化。例如：
He has to go there．他必须去那里。
She must be off now．她现在必须走了。
2．have to有时态的变化，must没有。例如：
He told me that I must be at the station by ten．他告诉我必须十点前到达车站。
He had to pay for it．他不得不赔偿。
3．have to强调客观上“不得不”做某事；must指主观上“必须”做某事。例如：
We must study hard．我们一定要努力学习。
He had to go on foot because there was something wrong with his car.因为他的汽车坏了，他不得不走着去。
Lesson 69教学设计方案
Teaching Objectives: Let the students understand “have to” and grasp how to use it. Learn some useful phrases and structures.
Language Focus: What’s the trouble? What’s the matter with you? have a headache, take one’s temperature, nothing serious, take this medicine three times a day, feel like eating, have( got) a pain in one’s head
Properties: Recorder, Overhead projector
Teaching Procedures:
I .Organizing the class
T: Ask the students to get ready for the class.
Greetings and a duty report.
II. Revision
1. Get the students to act out the passage in Lesson 68.
2. A quiz for them:
(l)have a good time (2)at the head of (3)in fact (4)look after (5)get on (6)stand in line (7)quarrel with (8) invite. . . to. . . (9) make a noise (10) laugh at (11) not. . . until (12)make friends (13)throw about (14)get off (15)feel well (16)complain about (17)at the end of (18) give the message to sb. (19) grow up (20) telephone sb.
III. Leading-in
T: When you feel bad or sick, you had better go to the hospital, arid doctors will help you.
Then the doctor will ask you some questions about illness and let you take your temperature, at last ask you to take some medicine if your illness is not too serious.
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