tailieunhanh - The complete guide to the toefl test part 108

It is administered at a network of testing centers that include universities, bi-national institutes, and ETS field offices all over the world. When you register for the test, you will be assigned the closest test center Most test centers will offer the TOEFL iBT thirty to forty times a year, depending on the size of the center. | Writing Tutorial Grammar 723 7. The first seven American astronauts were chose in 1959. 8. Medical students must to study both the theory and practice of medicine. 9. Ethics is the study of moral duties principles and values. 10. In music a chord is the sound of two or more notes that are playing together. 11. Every one of the body s billions of cells requires a constant supply of food and 12. The more or less rhythmic succession of economic booms and busts are referred to as the business cycle. 13. In the late nineteenth century many important theories in both the biological and the physical sciences have been produced. 14. Chromium used to make stainless steel. Grammar Point 6 Participles Participles are verbal adjectives. There are two kinds of participles present participles and past participles. The present participle always ends in -ing. The past participle of regular verbs ends in -ed but many verbs have irregular past participles. Participial phrases a participle and related words are often used after nouns. Participial phrases used this way are actually reduced shortened adjective clauses. Present participles are used to reduce adjective clauses that contain active verbs. Minnesota which joined the Union in 1858 became the thirty-second state full adjective clause with an active verb Minnesota joining the Union in 1858 became the thirty-second state participial phrase with a present participle Past participles are used to reduce adjective clauses with passive verbs. The College of William and Mary which was founded in 1693 is the second oldest college in the United States full adjective clause with a passive verb The College of William and Mary founded in 1693 is the second oldest college in the United States participial phrase with a past participle Participial phrases can also come before the subject of a sentence. Joining the Union in 1858 Minnesota became the thirty-second state. Founded in 1693 William and Mary .