It would be better if you stop here.

->I suggest you should stop here.

 Let's use energy saving bulbs.

->I suggest using energy saving bulbs.

1. Scientists are looking forward to the alternative energy sources

2. I suggest not turning the lights on when the room is light enough

3. It is necessary to use energy-saving bulbs instead of ordinary bulbs

4. You should reduce the amount of electricity your family uses

5. If we go on wasting water, there will be a shortage of fresh water

6. Energy-saving bulbs should be used to save electricity

7. The solar energy that gets to the Earth can't provide enough power for the world's population

8. I think we should turn off all the lights and fans before leaving the classroom

9. How about taking a shower instead of a bath to save water ?

10. If we go on littering, the environment will become seriously polluted

1. You (be)will be late for school if you (not go)don't go now

2. I( help)will help you with the homework if i (be)am free

3. There (be)will be big floods every year if we (cut)cut down too many trees in the forests

4. If we (not stop)don't stop littering, the environment (become)will become more and more polluted

5. She (pay)will pay 50,000 dong if she (use)uses 2 energy-saving bulbs

6. If i (see)see him, i (give)will give him a lift

7. The table (will collapse)will collapse if you (stand)stand on it

8. If he (eat)eats all that, he (be)will be ill

9. What (happen)happen if the pollution (go)goes on?

10. If the work (not finish)doesn't finish on time, we (fire)will fire you

11. If we (not stop)don't stop smoking, you (die)will die soon

12. The electricity will be cut off if you (not pay)don't pay the bill within 2 days

13. If it ( not rain)won't rain tomorrow, we (come)will come to visit them

2- Điền vào chõ trống với dạng đúng của động từ trong ngoặc
1. If I found your book, I would given it to you (find/ give)
2. She will phone us if she has any problems. (phone/ have)
3. If you go to the party , I will come with you (go/come)
4. She wouldn't very happy if she didn't get that new job (not be / not get)
5. If you come with us, you will have a good time (come/ have)
6. We ​will help you if we have the time (help/have)
7. I won't wait for you if you are late (not wait/ be)
8. We will go camping if it doesn't rain (go/ not rain)
9. If there is a good program on Tv tonight, I will watch it (be / watch)
10. We will go swimming if it is a nice day tomorrow (go/be)

1 found / would give

2 will phone / has

3 go / will come

4 wouldn't / didn't get

5 come / will have

6 will help / have 

7 won't wait / are 

8 will go / doesn't rain

9 is / will watch

10 will go / is

Double comparatives

a. If you work harder, you make more products

-> The harder you work, the more products you make.

b. If you have a better job, you get higher pay

-> The better job you have, the higher pay you get.

c. If you are happier, you look younger

-> The happier you are, the younger you look.

d. If there are more people, it will be better

-> The more people there are, the better it will be.

e. If they rise higher, they will fall harder

-> The higher they rise, the harder they will fall.

f. If it rains and rains, you feel more like not going out

-> The harder it rains, the more you feel like not going out.

g. If you get here sooner, we'll be able to start out sooner

-> The sooner you get here, the sooner we'll be able to start out.

h. If you hear more about it, you become more anxious

-> The more you hear about it, the more anxious you become.

i. If the letter is heavier, you have to put more stamps on it

-> The heavier the letter is, the more stamps you have to put on it.

j. If you travel to more places, you find out more about the world

-> The more places you travel to, the more you find out about the world.

drink-will feel

will go-is

will work-earn

will marry-buys

find-will take

give up-will feel

will use-take

1. Why don't you do the homework before class?

→I suggest the homework should be done before class

2.Energy-saving bulbs should be used to save electricity.

→We suggest using energy-saving bulbs to ave electricity

3. Let's clear up all the trash around the schoolyard.

→I suggest all the trash around the schoolyard should be cleared up

4. We should teach young children to care for the environment.

→I suggest young children should be taught to care for the environment

5. What about buying those products?

→I suggest that we should buy those products

6. Let's teach the children how to protect their health.

→I suggest the children should be taught how to protect their health

7. Let's collect garbage on the beach every morning.

→I suggest garbage on the beach should be collected every morning

8. Why don't we use energy-saving bulbs?

She suggests that energy-saving bulbs should be used

9. The teacher said to us, "Do your homework carefully".

→The teacher suggested that our homework should be done carefully

1. If we reduce the energy we use, we……………….money.
A. are saving B. will save C. will be saved D. will be saving
2. At 3 o’clock tomorrow afternoon, I …………..the meeting on Climate Change.
A. attended B. have attended C. will be attended D. will be attending
3. The effects of climate change…………..at the high – level conference next month.
A. will discuss B. will be discussing C. will be discussed D. was discussed
4. Do you think renewable energy ……………..fossil energy before 2030?
A. will replace B. is replacing C. will be replacing D. will be replaced
5. The children …………..to school because it’s snowing.
A. are walking B. will walk C. will be walking D. won’t be walking
6. Solar and wind …………..instead of fossil fuels within 20 years?
A. are used B. will be used C. will use D. will be using
7. Humankind’s future…………….bright if they can utilize renewable energy in the future.
A. is B. was C. will be D. won’t be
8. Where …………..in ten years?
A. do you live B. are you living C. will you be lived D. will you be living
9. We ……………able to create a future that’s free of carbon pollution by using renewable energy sources.
A. will be B. won’t be C. will be being D. will have been
10. Solar panels ……………….outdoors to capture sunlight and transform it into electricity.
A. will place B. will be placing C. will be placed D. will have placed