大学英语之基础英语综合教程第二册Unit 8 Key to Exercises.doc

Unit 8 Key to exercises: Vocabulary exercises: I. Explain the underlined part in each sentence in your own words. 1. except, apart from 2. essentially, basically 3. whenever it is possible 4. over a long period 5. different, replacement II. Fill in the blank in each sentence with a word taken from the box in its appropriate form. focus much the same consciousness threat deserved decomposed revealed frequent III. Fill in the blanks with the appropriate forms of the given words. perusal intensified excessive speculative abundance inclusive emits locally IV. Choose the word or phrase that can replace the underlined part in each sentence without changing its original meaning. 1. A 2. D 3. B 4. C 5. D 6. A 7. C 8. A V. Give a synonym or an antonym of the word underlined in each sentence in the sense it is used. 1. Synonym: mainly, basically, firstly 2. Antonym: unfortunately, unluckily 3. Antonym: exclude 4. Synonym: part, division 5. Antonym: decrease, lowering 6. Antonym: unavailable 7. Synonym: weak, insecure, unsafe 8. Antonym: irresponsible VI. Write in each space one word that has the same stem as underlined in each given word. 1. centigrade centimeter 2. kilogram kilometer 3. synopsis synthetic 4. supervise superior 5. submarine submerge 6. astronaut astronomy 7. microbiology microwave 8. overwork overload Grammar exercises: I. Complete the following sentences using the appropriate verb forms. 1. began; have had 2. Have; talked; have talked; talked 3. has invented 4. have telephoned; went 5. have been 6. has got / has gotten 7. has been 8. have forgotten 9. has gone; did he go 10. was; has disappeared II. Make sentences using the time adverbials given. The answers are open III. Compare the following pairs of sentences and explain the difference. a. The verb here is in simple present form. “Has got” signals stativ