Ex. A (page 28-30)
1. a Matt won the match.
2. b. Liz's favorite singer is Rihanna.
3. d. snowboard
4. c. Brad had forgotten to put detergent into the machine.
5. b. Jane loves to walk.
6. b. Melanie tucked in a lot of ice creams at the jamboree.
7. c. If according to our clocks, the sun sets an hour earlier, it will also rise an hour earlier.


Ex. B (page 30-31)
1. b. People were glad to find a way to stay awake.
2. a. It is natural.
3. d. They may be discovered by accident.


Ex. C (page 31-32)
1.conclusion : Venus flytrap eats only flies, caterpillar and spiders.
Answer: Venus flytrap eats flies, caterpillars and spiders.
Answer: Venus flytrap eat any small insects. << I prefer this one !!

2.Conclusion : Shell come in all shapes and size.
Good Conclusion 

3.Conclusion : The little spotted kiwi faces extinction and is hence protected
Good Conclusion 

4.Conclusion : It is very difficult to learn origami. 
Answer: Origami is a skill, an art or just plain fun.  (
Answer : Origami is easy and many people can do it. (M.TUM)


5.Their jewellery is one of the records historians had to rely on for most of the ancient civilizations.
Good Conclusion  


Ex. D (page 33)

1.Butterflies drink from a built-in straw.A butterfly has no mouth.It can't chew.So it eats with a long,thin tube.Through the tube,the butterfly can suck up sweet nectar.

What can you conclude about the kinds of food a butterfly eats?

Answer: Butterflies can eat only liquid nectar. 

2.A green house is not green.It is clear.That is because it is made of glass.The glass lets in the sun's heat that helps plants grow.The green plants are the reason for the name.They grow all year round in the warm,sunny room.
What can you conclude about what plants need to grow?
Answer: Plants need sunlight to grow. 

เฉลยแบบฝึกหัด เรื่อง Understanding Cause and Effect

Ex. A (page 14-15)

1. a.keep chicks warm

2. b. learn to fly more quickly

3. c. looks like cotton in the wild

Ex. B (page 15)

1. Because the center of the trunk is rotten and the bird’s nest will be soft

2. Because people cut down older pine forest. (So the birds have no place to live)

3. Because they cut them down for wood. (Because they need wood)

Ex. C (page 16)

2. Effect: they (Fish) swim in groups.

3. Effect: people settled down near rivers.

4. Cause: Owls see well in the dark.

5. Effect: the game birds can’t see them

Ex. D (page 17)

1. c. The birds have died out.

2. b. Industrial waste and drying up of the lake.

3. a. They face extinction.

Ex. E (page 18)

2.  Cause : I planted some trees. 
 Effect : We get more oxygen. 
 Sentence: I planted some trees. So, we get more oxygen. (wolf101-01)

M.Tum : We get more oxygen because I planted some trees.

3.  Cause : My sister stayed up past midnight.
 Effect : she got up late.
Sentence: My sister stayed up past midnight. So, she got up late.(eagle103-03)

M.Tum : My sister stayed up past midnight. Therefore, she got up late.

4. Cause : Lena missed school on Monday.
Effect :  She didn’t know what her friend study on Monday.

Sentence: Lena missed school on Monday. So, she didn’t know what her friend study on Monday. (eagle103-04)

M.Tum : Lena didn’t know what her friend study on Monday since she missed school on Monday.

5. Cause : David signed up for French classes.
Effect :  He can speak French.

Sentence: David signed up for French classes. So, he can speak French. (horse106-04)

M.Tum : David can speak French because he signed up for French classes.

Ex. A (page 19)

1-d

2-c

3-a

4-f

5-b

6-e

Ex. B (page 19)

1	x
2
3
4	x

Ex. C (page 20)

Cause

Effect

Conjunction (Linking word)

1. Tony away from school as he was in the hospital

2. Pen- chan was scared, so she called for help

3.There was a strike and the buses did not ply

4.The plants died as there was no water

5.Eric forgot his swimsuit and therefore could not swim

6.The street lights were switched on, so we could see our way

7.The match was abandoned when it rained

8.He lost control of his car as the brakes were faulty

Exercise page 18 (My World of English)

Understanding Cause and Effect

Read the cause and write an effect. Then write one full sentence that states the cause and effect.

1. Cause : A storm hit the city

  Effect : All the residents fled.

  Sentence : A storm hit the city, so all the residents fled.

2. Cause : I planted some trees.

   Effect : Some trees has grow.

   Sentence : I planted some trees so some trees has grow.

3. Cause : My sister stayed up past midnight.

   Effect : My sister get up late.

   Sentence : My sister stayed up past midnight so she get up late.

4. Cause : Lena missed school on Monday.

 Effect : she isn’t understand the lessons.

 Sentence :  Lena missed school on Monday, so she isn’t understand the lessons.

Exercise online::Linking words

Linking words  - Exercises (vivquarry.com)

Write the sentence again, using the word in brackets. The meaning must stay exactly the same.

*The answer is under the exercise. Don’t see before do exercise!!!!*

1. She is a very good English speaker. You would think it was her native language.

(so)                                          

2. There were so many people in the room that we couldn't move.

(such)____________________________

3. We missed the film. there was such a lot of traffic.

 (so)_____________________________

4. I can't wear this coat in winter, It's not warm enough.

(too)_____________________________

5. When he speaks English, I can't understand what he says.

(enough)___________________________

6. We lost the match although we we the better team.

 (despite)__________________________

7. In spite of not having eaten for 24 hours, I didn't feel hungry.

 (even though)_______________________

8. Her injured foot, she managed to walk to the village.

(although)__________________________

9. The football match is still going on.

(yet)_____________________________

10. Has Jane got divorced yet?
(still)_____________________________

Answer
V
V
1.She is a very good English speaker so You would think it was her native language.
2.There were so many people such in the room that we couldn't move.
3.There was such a lot of traffic, so We missed the film.
4.I can't wear this coat in winter, It's not too warm enough.
5.When he speaks English, I can't understand what he says enough.
6.We lost the match although we despite we the better team
7.In spite of not having eaten for 24 hours, even though I didn't feel hungry.
8.Although her injured foot, she managed to walk to the village
9.Thefootball match is still going on yet.
10.Has Jane still got divorced yet?

If your point 5 up,you pass

Fight! ^^

credit::http://www.vivquarry.com/wkshts/linkwdex.html