大学英语六级考试短文写作精讲－7

　　上面三句中的形容词从句和介词短语明确了是什么样的房子(what houses)，什么样的钢(what steel)和什么样的艺术 (what art)，故用the。下面三句同样有形容词从句和介词短语修饰名词，但是它们只指这些名词属于某一类事物，并非特指，故不用the。例如： 　　houses which fail to satisfy these minimum requirements are to be pulled down. 　　steel of great strength is needed for the manufacture of guns. 　　art in the eighteenth century probably played a more important part in people’s lives than it does today. 　　exercise 4 　　fill in the blanks with the where necessary: 　　1. the engineers found that steel was of insufficiently high quality. steel, i suppose, is the most important single product of the modern industrial world. 　　2. large forests can have an important influence on climate. 　　forests have all been cut down. 　　3. nature was probably his chief source of inspiration (灵感，鼓舞). 　　nature of the problem was such as to arouse his interest. 　　4. education of little children has been greatly neglected. 　　public education must be greatly extended. 　　5. the exploration(探索)of space has become one of the chief topics of science fiction(科幻小说). 　　space between the table and the wall was just big enough for a small bed. 　　6. i prefer classical music to pop music. 　　film wasn’t very good but i liked music. 　　7. my favourite subject at school was history. 　　all students should know something about history of their own country. 　　8. i cannot judge accuracy of your calculations(计算). 　　in mathematics accuracy is essential. 　　2) 定冠词的主要用法 　　a) 用于单数名词前，表示“某一类人或物”，以区别于其他人或物。例如： 　　the tiger is a fierce(凶猛的) animal. (相当于a tiger is a fierce animal.或tigers are fierce animals.) 　　in this tribe the woman goes out hunting and the man stays at home to look after the children. 　　下面三句中的斜体部分不能互换： 　　who invented the radio? (指类别) 　　who had a radio? (指同类中的任何一个) 　　who manufactured radios?(指这一类中的所有个体) 　　man 指“人类”时，不用the。例如： 　　man will conquer nature. 　　b) 用于指世上独一无二的东西，如 the moon，the sun，the world等。 　　c) 用于表示“乐器”的名词前，但一般不用于表示“体育运动”的名词前。例如： 　　can you play the guitar? 　　i play football every day. 　　d) 用于某些形容词前，可表示“一类人”。例如： 　　the young are impatient;they want changes. 　　e) 一般不用于表示“疾病”的名词前。例如： 　　i’m just recovering from rheumatism(风湿病).