大学英语基础教程(北大版)教案第一册Unit Eight

Unit 8

Teaching Objectives:

By the end of this unit, the students will be expected to be able to

1.make clear how time interacts with life, further know how to take their time and keep natural inner rhythms in synchronization with clock time, and learn to change the way to think about time in order to prevent “time illness”;

2. use skillfully the 10 key words and 8 expressions learned in TEXT A in conversations and writings, and be familiar with the words and learned in the text;

3. Learn something about "the origin life" and discover the mystery of life; learn as many language points as possible in TEXT B;

4.consolidate the basic grammar on the past future tense;

5. get to know how to write letters of congratulation and introduction

Teaching Methods: Lecture, Discussion

Unit Duration: 8 class hours(45 minutes each)

Teaching procedures:

I. Preparatory

1. Words And Phrases Learned In Display

Emerge: rise from or as if from immersion 出现，浮现

Remind: make someone remember something that they must do 提醒，使记住

Security: safety, freedom from dange or anxiety 安全

Accurate: correct and true in every detail 准确的，与事实完全相反的，无误的

Recall: remember a particular fact, event, or situation from the past 记忆，想起

Accelerate:if a process accelerates or if something accelerates, it happens faster than usual or sooner than you expect. 加速，促进加快…..的速度

Perceive:notice, see, or recognize something 察觉

Flexible:a person, plan, etc. that is flexible can change or be changed easily to suit any new situation 灵活的

Advantage: something likely to bring success, esp. in competition 优势

Related: connected in some way 有关

2. Expressions Learned In Display

1. isolated… from

2. frown on

3. interact… with

4. was given priority over

5. insisted on

6. adjust to

7. in an instant 8. contribute to

II. Language In Context

1. Information Related To The Text

Chronobiology is the study of the effects of time and rhythmical phenomena on life processes. One of the studies in the field is that of biological clocks, which are internal phisiological systems that enable organisms to live in harmony with the rhythms of nature, such as the cycles of day and

night and of the seasons. Such biological “timbers”exist for almost every kind of periodicity throughout the plant and animal world, but most of what is known about them comes from the study of circadian, or daily rhythms. Circadian rhythms cue typical daily behavior patterns even in the absence of external cues such as sunrise, demonstrating that such patterns depend on internal timers for their periodicity.

2. Introductory Remarks

This text is an exposition, which explains how and why. In the text you will find features of this type of text-formal, informative, and complicated. The data and quotations in the text are up-to-date, and authoritative to render it convincing, and acceptable.

3. Language Points

1. They remind me that my life is not ruled by clocks…

Remind v.

1) make someone remember something that they knew or something that happened in the past(常见结构为remind sb of sth; remind sb. what/how, etc.) 使人想起，记起。

This reminds me of last year. 这使我想起去年的事。

Hearing that song always reminds me of my life at college.

听到那首歌总让我想起大学生活。

2）make someone remember something that they must do.(常见结构为remind sb to do sth; remind sb about sth; remind sb that; remind sb what/how/when)提醒，使记住。

Remind me to write to Mother. 提醒我给妈妈寄信。

Remind me what to do; I haven’t used this machine for ages.

提醒我该怎么做，我已很久没用过这台机器了。

Please remind me again nearer to the time of the interview.

到快面试时请再提醒我一下。

2. Almost all living things in our world carry their own biological clocks synchronized with the rhythms of nature.

Synchronize with

1) cause to occur or operate with exact coincidence in time or rate 使同步，使按照完全相同的时间或速度出现或运作

We synchronized our watches. 我们校准了手表。

2）cause to occur or people at the same time as something else 使同时发生，使与其他事物在同一时间出现或运作

They synchronized their trip with the annual tulip festival.

他们把旅行的时间定在每年一度的郁金香节。

3.These living clocks are not accurate in any robot-like mechanical sense.

Accurate adj. Correct and true in every detail 准确的，与事实完全相符的，无误的

The brochure tries to give a fair and accurate description of each hotel.

手册上力求公正、准确地描述每一个旅馆。