UNIT 16 SCIENTISTS AT WORK

Lesson 1
--------warming up, listening and speaking
Step1.Warming up
Ask the students to look at the four photos in the book and describe what they see.
Photo 1 shows students at work in a chemistry lab.
Photo 2 shows an English book called Hamlet, a dictionary and a notebook.
Photo 3 shows two students doing an experiment.
Photo 4 shows students looking at something through a microscope.
Step2. Listening
From the four photos we know that we often do some experiments at school. But do you know how to behave in a science lab? Now let’s listen to a dialogue. It will tell us what to do and what not to do.
Listen for the first time and do Ex1.
Then check the answers with the class.
Listen for the second time and do Ex2.
Listen again,let the students check their answers.
Then check the answers with the class.
At last,listen again and let the students find out the sentences which contain the answers.
Step3.Speaking
Now let’s talk about the great work of scientists,a high-speed maglev train.
Read the dialogue and talk about ther advantages and disadvantages of it, using the useful expressions in the column.
Then listen to the dialogue and pay attention to the pronunciation,stress and intonation.
At last, explain some language points.
1.a waste of
It’s a waste of money/time.
2.mean to do sth
mean doing sth
3.make a noise
4.make use of
make good/full/little use of
Homework;
Read rhe dialogue
Grasp the language points

Lesson 2
------Reading
Step 1. Revision
Step 2. Pre-Reading
Do you know the names of some famous scientists? Do you know Benjamin Franklin? And what is he famous for? Today we will read about him.
Step 3. General reading
Read the passage to get the main idea of it. Then do Ex1 on page 25.
Step 4. Fast-reading
Read the passage again and do the following exercise.
1. Scientists knew what electricity is for the 1st time______.
A.in June 1752
B.before 1752
C.after 1752
D.in the 19thcentury
答案:A
2. Which of the following is in the correct order?
a.The experiment proves that lightning and electricity are the same.
b.The kite flew high in the rainy shy.
c.He made a silk kite.
d.Very sharp piece of metal was fixed.
e.A key was fastened to the end of the string.
f.A ribbon was tied to the string.
A.d, e, f, c, b, a
B.c, d, e, f, b, a
C.d, c, e, f, a, b
D.c, d, e, f, a, b
答案:D
3.Franklin made the kite of silk because______.
A. wet silk does not conduct electricity
B. silk kite flies high
C. silk kite will last longer in weather with rain and strong winds
D. silk kite is cheaper
答案:C
4.Text 2 is meant for ______.
A.experts
B.scientists
C.common readers
D. officials
答案:C
5.Which is not stated but can be inferred from Text1 ?
A. Franklin did the experiment with the kite.
B. Franklin’s experiment with electricity was dangerous.
C. Franklin failed the experiment again.
D. The experiment was conducted in bad weather.
答案:B

Step 5. Listening
Listen to the tape of the passage and pay attention to the pronunciation and intonation.
Step 6. Language points
1. experiment: n.
do an experiment
make an experiment
perform an experiment
conduct an experiment
carry out an experiment
2. conduct: vt.
He conducted me around the museum.
He conducted the orchestra.
The manager conducted his business carefully.
3. charge:
vt.
(1)使….充满
He’s charging a battery.
(2)索价,收费
He charged us 10 dollars for mending this pair of sh
生词表: