Uni 7 ENVIRONMENTAL
PROTECTION
t
LESSON 3: A CLOSER LOOK
2

1

LESSON 3: A CLOSER LOOK 2
WARM-UP

Asking questions
PRESENTATION

Task 1: Read the sentences and write I.C if the underlined
clause is an independent clause or D.C if it is a dependent
clause.
Task 2: Choose A, B, or C to complete each sentence.
Task 3. Match the clauses in the two columns to form complex
sentences.
Task 4: Combine each pair of sentences, using the conjunction
in brackets.

PRACTICE

PRODUCTION
CONSOLIDATION

Introduction of complex sentences with adverb clauses of time

Task 5: Matching game.
• Wrap-up
• Homework

WARM-UP

ADVERB
CLAUSES OF
TIME

1. I always take a bath before I go to bed.
2. Will you wait here until I am ready?
3. I was not at home when he came to see
me.
4. Do not disturb me when I am busy with
my work.
5. As soon as she finished that project,
she started working on the next.
6. After I have finished my work, I will
accompany you to the park.

PRESENTATION

Complex sentences with adverb clauses of time
– A complex sentence contains one independent
clause and at least one dependent clause.
Example:
The roads were slippery
independent clause

when it rained.
dependent clause

PRESENTATION

Complex sentences with adverb clauses of time
– An adverb clause is a dependent clause.
– An adverb clause of time shows when something
happens. It is usually introduced by time connectors:
before, after, when, while, till / until, as soon as, …

PRESENTATION

1

Read the sentences and write I.C if the underlined clause is an independent clause
or D.C if it is a dependent clause

I.C 1. I'll wait for you here until you get back.
D.C 2. Make sure you lock the door when you
go out.

I.C 3. You must get a permit before you build
a campfire at a national park.

PRESENTATION

1

Read the sentences and write I.C if the underlined clause is an independent clause
or D.C if it is a dependent clause

D.C 4. Don't use too much water while you
are having a shower.

D.C 5. As soon as my friends come, we will
pick up rubbish on the beach.

PRACTICE

2

Choose A, B, or C to complete each sentence.

1. I was not at home ______ he came to see me yesterday.
A. when
B. until
C. as soon as
2. We called the forest guard unit ______ we saw the bush fire.
A. as soon as
B. while
C. until
3. I went straight to the gym ______ I left home.
A. while
B. before
C. after

PRACTICE

2

Choose A, B, or C to complete each sentence.

4. You can stay with us ______ you find a suitable place to
stay.
A. as soon as
B. before
C. until
5. We cleaned up everything at the campsite ______ we left.
A. until
B. before
C. while

PRACTICE

3 Match the clauses in the two columns to form complex sentences.

PRACTICE

4 Combine each pair of sentences, using the conjunction in brackets.
1. I arrive at the station. I will call you right after. (as soon as)
I will call you as soon as I arrive at the station.
As soon as I arrive at the station, I will call you.
2. Many Vietnamese women wear conical hats. They work in
the field. (when)
Many Vietnamese women wear conical hats when they
work in the field.

PRACTICE

4 Combine each pair of sentences, using the conjunction in brackets.
3. My father taught me how to use the computer. Then he
bought one for me. (before)
My father taught me how to use the computer before he
bought one for me.
Before my father bought me a computer, he taught me
how to use it.

PRACTICE

4 Combine each pair of sentences, using the conjunction in brackets.
4. Nick is reading a novel. Jack is reading a cartoon. (while)
Nick is reading a novel while Jack is reading a cartoon.
While Nick is reading a novel, Jack is reading a cartoon.

PRACTICE

4 Combine each pair of sentences, using the conjunction in brackets.
5. The tornado hit. There were only a few houses left
standing. (after)
After the tornado hit, there were only a few houses
left standing.
There were only a few houses left standing after the
tornado hit.

PRODUCTION

5

Matching game:

Work in two groups, A and B.
Group A:
write main clauses
Group B:
write adverb
clauses of time

CONSOLIDATION

1 Wrap-up
What have we learnt in this lesson?
 use the Complex sentences with
adverb clauses of time;

CONSOLIDATION

2 Homework
Do exercises in the workbook.

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