tailieunhanh - Delta's key the toefl test part 41

Tham khảo tài liệu 'delta's key the toefl test part 41', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | VOCADULAKỴ ỈN Context 5. Key words in a sentence or passage can be context clues. Use the meanings of key words in a sentence and your understanding of the sentence as a whole to help you guess the meaning of an unfamiliar word. Look at this example Light output measured in lumens depends on the amount of electricity used by a bulb. The meaning of lumens is given by other words and phrases in the sentence light output measured electricity. From these key words you know that a lumen is a unit of measurement of light output. Scan for key words. In the following passages circle key words that help you understand the meaning of the underlined words. There are no single right answers. a. Like the other giant planets Neptune emits more energy than it receives from the sun. These excesses are thought to be the cooling from internal heat sources and from the formation of the planet. b. Most people think spring has begun when average daily temperatures are above freezing. By this definition spring generally starts about March 1 in the northern states. Some people think that the threshold of spring should be the date when the daily normal temperature reaches 10 degrees Celsius about which time most plant life has revived from its winter dormancy. Such temperatures occur about February 15 in the Deep South but not until April 1 in the area from Virginia to Kansas. With your classmates and teacher discuss the key words you identified. Use them to write a short definition or description of each underlined word. 6. Word parts are clues that can help you understand the meaning of unfamiliar words. Many English words are made up of parts of older English Greek and Latin words. If you know the meanings of some of these word parts you can usually get a general understanding of some unfamiliar words especially in context. Reading There are three types of word parts prefixes stems and suffixes. A prefix is a word beginning. A prefix affects the meaning of a word. A stem is the .