Good morning!
Everybody

UNIT 11: SCIENCE AND TECHNOLOGY
Lesson 2: A Closer look 1

Vocabulary
• Chemist (n) nhà hóa học
• Physicist (n) nhà vật lý
• Software development (n) nhà phát triển phần mềm
• Conservationist (n) nhà bảo tồn
• Marine: thuộc về biển

+ Look out!
- We add -er, -or, or -ist to a verb or noun
to form a noun indicating people.

Chúng ta thêm -er, -or, hoặc -ist vào sau
động từ hoặc danh từ để tạo thành danh
từ chỉ người

Example:
- to learn ->learner
- to invent -> inventor
- science -> scientist

EXERCISE :

1. To work 
2. To visit 
3. Art

4. To retail 

Worker
Visitor
Artist
Retailer

Activity 1. Complete the following sentences with nouns
indicating people.
1. A person who gives
adviser
advice is an _______.

2. A scientist who
studies chemistry is a
_______
chemist.

Activity 1. Complete the following sentences with
nouns indicating people.

3. A person whose job is
to design things is a
designer
_______ .
4. A person whose job is writing
programmes for computers is a
programmer
_______
.
5. A marine biologist
_______ is a
scientist who studies.

Activity 2. Write a noun from the list under each picture
doctor chemist physicist archaeologist
software developer conservationist

explorer engineer

Who's this?

1. chemist

2. software
developer

5. doctor

6. conservationist 7. explorer

3. engineer

4. physicist

8. archaeologist

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

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

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

unforeseen
immature
impatient
impure
impossible
Unnatural

unlucky
unwise
unhealthy
unhurt
unlimited
impolite

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

oOo

ooO

oOoo

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

oOo

Unwise
Impure
Unhurt

Unlucky
Impatient
Unnatural
Unhealthy

ooO

oOoo

Impolite Impossible
Unforeseen Unlimited
Immature

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.
2. Scientists have identified a link between an ______
unhealthy diet
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.
- Prepare for a closer look 2.