UNIT 11

Science and Technology
LESSON 2 : A CLOSER LOOK 1

I. VOCABULARY
- archaeologist (n):
- explorer (n):
- conservationist (n):
- marine (adj):

nhà khảo cổ học
nhà thám hiểm
người bảo tồn
(thuộc về) biển

+ Look out!
- We add -er, -or, or -ist to a verb or noun to form a noun
indicating people.
Example: - to learn -> learner
- to invent -> inventor
- science -> scientist
1. to work

2. to visit

3. art

4. to retail

5. participate 

worker
visitor
artist
retailer: nhà bán lẻ
participant

1. Complete the following sentences with nouns indicating people

adviser/ advisor

chemist

biologist
programmer

designer

3. Give the correct form of the words in brackets.
1. Every day we hear about new (develop) developments
______
in science and
technology.
2. Einstein was one of the greatest (science) scientists
______ in the world.
3. The USA is a world leader in space (explore) exploration
______ .
medical science will help people live longer in
4. Advances in (medicine) ______
the future.
economic development and the
5. There is a link between (economy) _________
environment.

II. Pronunciation: Stress in words starting with un- and im- When we add the prefix un- or im- (meaning 'not') to a root word, the
stress of the word does not normally change.
Example:
- 'friendly → un'friendly
- 'probable → im'probable
Note: When we add the prefix un- or im- to a one-syllable word, the stress
falls on the root word.
Example: - fair → un'fair
- pure → im'pure

4. Listen and repeat the following words. Mark the stressed
syllables in the words.

5. Put the words from 4 in the right columns.

oO

oOo

ooO

oOoo

Unwise

Unlucky

Impolite

Impossible

Impure

Impatient

Unforeseen

Unlimited

Unhurt

Unhealthy

Immature

Unnatural

Activity 6. Fill the gaps with one of the words in 5.
Listen and check, then read the sentences.
impure and couldn't be
1. The teacher said this water was ______
used in our experiment.
unhealthy diet
2. Scientists have identified a link between an ______
and diseases.
3. This job would be impossible
______ without the help of a
computer.
4. Our natural resources are not unlimited
______ .
5. It's no good being impatient
______ with small children.

* Ho
mew
ork:

- Learn vocabulary by heart and rewrite
them in sentences.
- Do ex. B in WB.
- Prepare for a closer look 2.

6. Fill the gaps with one of the words in 5. Listen and check, then
read the sentences.
impureand couldn't be used in
1. The teacher said this water was ______
our experiment.

unhealthy
2. Scientists have identified a link between an ______
diet and
diseases.
impossiblewithout the help of a computer.
3. This job would be ______
unlimited
4. Our natural resources are not ______
.
impatientwith small children.
5. It's no good being ______