UNIT 9: UNDERSEA WORLD
I. WORD FORM:
1. Many scientists have made efforts to measure the…………..of this ocean. [DEEP]
2. Some…………………. animals have been protected in national parks. [DANGER]
3. The rivers in our city are…………………by the chemical pollutants discharged from factories nearby.
[POLLUTION]
4. With modern technology we have now made important………………….about the biodiversity of marine life.
[DISCOVER]
5. Scientists send submarines to……………… the seabed and bring samples of marine life back to the surface
for further study. [INVESTIGATION]
II. PHONETIC AND WORD STRESS
* Pick out the word whose underlined part is pronounced differently from that of the other words:
6. A. shark B. warn C. park D. far
7. A. sea B. meat C. seat D. fear
8. A. surface B. curtain C. bury D. furcoat
* Pick out the word that has the stress pattern different from that of the other words:
9. A. threaten B. concern C. device D. provide
10. A. various B. oversized C. undersea D. interact
III. GRAMMAR: CONDITIONAL SENTENCE TYPE 2
Exercise 1: Put the verbs in brackets in the correct form.
11. If you eat this, you ……………. right away.
A. would die B. would have die C. will die D. die
12. If I had money, I ……………. a dictionary.
A. would buy B. would bought C. will buy D. would have bought
13. If the weather ……………. fine yesterday, they would have gone on a picnic.
A. was B. are C. had been D. were
14. If you ……………. immediately, I’ll call the police.
A. don’t leave B. didn’t leave C. were left D. had left
15. If I were your teacher, I ……………. you.
A. will punish B. would punish C. punish D. would have punished
16. ……………. you study harder, you won’t pass the exam.

38. It isn’t Saturday. If it (be) Saturday, I (go) to the beach.
39. I have to go to class today. If I (not, have to) go to class today, I (go) shopping or (visit) my friend.
40. I don’t understand that sentence. If I (understand) that sentence, I (explain) it to you.
Exercise 3: Rewrite the following sentences in such a way that they don’t change the meaning
41. He doesn’t have the money and he cannot afford a new car. >> If
42. I cannot go to the beach with you this weekend because I have a date with my old classmate.
43. I never get very lonely because I have lots of good friends.>> If
44. The match can be cancelled because it rains heavily.>>If
45. Because Simon doesn’t live near his mother, he can’t visit her often. >> If
46. I don’t have free time, so I can’t go to see him.>> If
47. I am poor; I can’t travel around the world. >> If
48. I am not a millionaire, I can’t help all people. >> if
49. I am not old enough; I can’t decide my own life. >> If
50. I am very tired so I can’t finish my work. >> If
Exercise 4: Supply the correct verb form.
51. Be quiet! The baby (sleep).
52. We seldom (eat) before 6:30.
53. Look! A man (run) after the train. He (want) to catch it.
54. The sun (set) in the West.
55. It (be) often hot in summer.
56. I (do) an exercise on the present tense at the moment and I (think) that I (know) how to use it now.
57. My mother sometimes (buy) vegetables at this market.
58. It (be) very cold now.
59. It (rain) much in winter. It (rain) now.
60. Daisy (cook) some food in the kitchen at present. She always (cook) in the morning.
61. How long you (study) English? - For 5 years.
62. I (wait) for two hours, but she (not, come) yet.
63. She (read) all the books written by Dickens. How many books you (read)?
64. Jack (go) to Paris for a holiday. He never (be) there.
65. You (sleep) so far? I (ring) the bell for the last twenty minutes.

9. A. destroy B. planet C. farmer D. forest
10. A. eliminate B. disadvantage C. environment D. endanger
III. GRAMMAR: PASSIVE VOICE
Exercise 1: Choose the best answers:
11. The photos ................... in a London studio last week.
A. were taken B. have taken C. was taken D. have been taken
12. The car ................... by my father yesterday.
A. were washed B. was washed C. washed D. has been washed
13. A railway bridge has already....................over the river.
A. been erected B. erecting C. in construction D. being built
14. When the boy ................... the car he was badly injured.
A. is hit by B. was hit by C. hit D. was hitting
15. The new motorway ..................... and built last year.
A. planned B. was planned C. was planning D. had planned
16. Many mistakes ......................... made.
A. has been just B. have just been C. is just D. to be just
17. His father gave him a very expensive cell phone on his last birthday.
A. He is given a very expensive cell phone on his last birthday.
B. He was given a very expensive cell phone on his last birthday.
C. He had been given a very expensive cell phone on his last birthday.
D. He has been given a very expensive cell phone on his last birthday.
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18. What will happen if the air....................... ?
A. was polluted B. be polluted C. is polluted D. has polluted
19. They are building a new zoo near my village.
A. A new zoo is being built near my village. B. A new zoo will be built near my village.
C. A new zoo is built near my village. D. A new zoo is being building near my
village.
20. Most forests in other climatic areas.......................by human beings.
A. had already been affected B. have already been affecting

39. The manager didn’t phone the secretary
this morning.
40. Did Mary buy this beautiful dress?
41. Have you finished the above sentences?
42. Are you going to repair those shoes?
43. How many languages do people speak in
Canada?
44. Some people will interview the new
president on TV.
45. The students have discussed the pollution
problems since last week.
46. Do they teach French in this school?
47. Did the teacher give the handouts?
48. They were cleaning the floor.
49. The boys broke the window yesterday.
50. They will hold a meeting before May Day.
51. How can they open the safe?
52. Is she making big cakes for the party?
53. Will you invite her to your party?
54. Mary is cutting the cake with a sharp knife.
55. Why didn’t they help him?
Exercise 3:(Verb tense ): Put the verb in the correct tenses
56. I (see) a car accident while I (wait) for you at this corner yesterday.
57. Mr. Jone (be) principal of our school since last year.
58. Mr. Smith (teach) at this school since he (graduate) in 1980.
59. My father (not, watch) TV every night.
60. I (meet) Arthur three weeks ago.
61. Yesterday the police (report) that they (capture) the thief.
62. Last month I (be) in the hospital for tens days.
63. What you (do) when I (ring) you last night?

3. This river is seriously contaminated. This……………………..has threaten the habitat of many kinds
of fish. [CONTAMINATE]
4. Children can also learn about the habits of animals and how one species is…………….upon
another for survival. [DEPEND]
5. This……….park is special because it has plants and animals from both tropical and temperate
zones. [NATION]
II. PHONETIC AND WORD STRESS
* Pick out the word whose underlined part is pronounced differently from that of the other words:
6. A. question B. contamination C. combination D. information
7. A. parked B. played C. stayed D. loved
8. A. address B. dependent C. handsome D. postcard
* Pick out the word that has the stress pattern different from that of the other words:
9. A. nationalB. establish C. tropical D. interest
10. A. variety B. temperate C. pagoda D. excursion
III. GRAMMAR: CONDITIONAL SENTENCE TYPE 3
Exercise 1: Verb form
11. If I ................... you, I’d apply for that job.
A. had been B. were C. am D. weren’t
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12. If I ................... ill, I wouldn’t have been absent from class.
A. hadn’t been B. weren’t C. had been D. would have been
13. Unless you ................... harder, you won’t succeed.
A. will try B. try C. are trying D. have tried
14. “Yes, but if he had tried harder, he ...................................won.”
A. might B. might have C. might of D. might has
15. If I got a scholarship to England , my parents ...................... very proud of me.
A. will be B. would be C. will have been D. would have been
16. I wouldn’t have gone to the zoo if......................
A. I knew it would have rained B. I had known it would have rained
C. I knew it would rain D. I had known it would rain

37. You (have) a good time if you (be) at the party last night.
38. If I (not, drink) strong tea with lemon last night, I (have) a sound sleep.
39. If it (not, rain) yesterday, we (come) to visit them.
40. If she (eat) something last night, she (not, feel) hungry.
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arrest wake knock check translate make
spend carry hear find drive
41. I didn’t feel good yesterday. If I (feel) better, I (come) to class yesterday.
42. I didn’t know it was your birthday. I (get) you a present if (I know) it was your birthday.
43. It was cold yesterday. If it (be, not) cold yesterday, I (go) swimming.
44. Jack didn’t study for the test. If he (study) for the test, he (pass) it.
45. I’m sorry that you didn’t come to my party. If you (come), you (meet) many old friends.
46. I didn’t have enough money last night. If I (have) enough money last night, I (go) to a show.
47. I didn’t have time so I didn’t go shopping. If I (have) time, I (go) shopping with you.
48. If human had been more friendly with nature, they (endure) natural disasters.
49. If people (use) more environment-friendly products, they would not have worried about global
warming.
50. If more garbage (dump) into the sea, people would have suffered from sea pollution.
Exercise 3: sentence transformation
51. She didn’t eat anything because she wasn’t hungry. >>If
52. The accident happened because the drive in front stopped so suddenly. >>If
53. I didn’t wake you up because I didn’t know you wanted to get up early. >> If
54. She didn’t buy the watch because she didn’t bring enough money with him. >> If
55. I had a cold because I walked in the rain. >> If
56. They didn’t sell the house because their children wanted to keep it. >> If
57. Mrs. White fell down because she was too weak. >> If
58. He failed the exam because she didn’t do it well. >> If
59. She couldn’t come because she had to work overtime. >> If
60. I couldn’t answer the phone because I was having a bath. >> If
Exercise 4: if not = unless