they do not consume natural resources of petroleum．secondly，they do not cause the pollution problem．last but not least，they contribute to people’s health by giving them due physical exercise． 9．表示数量 1）it has increased（decreased）from．．．to．．． 2）the population in this city has now increased （decreased）to 800，000． 3）the output of july in this factory increased by 15％ compared with that of january． 例如： with the improvement of the living standard，the proportion of people’s income spent on food has dec reased while that spent on education has increased． 再如： from the graph listed above，itcan be seen that student use of computers has increased from an average of less than two hours per week in 1990 to 20 hours in 2000． 注：“from the graph listed above，it can be seen that”见句式12。考生将句式9和句式12结合在一起，便可较好地写出2002年6月cet －4、6短文写作的第一段。 10．表示看法 1）people have（take，adopt，assume）different attitudes towards sth． 2）people have different opinions on this problem． 3）people take different views of（on）the question． 4）some people believe that．．．others argue that．．． 例如： people have different attitudes towards failure．some believe that failure leads to success． every failure they experience translates into a greater chance of success at their renewed endeavor．however， others are easily discouraged by failures and put themselves into the category of losers． 再如： do“lucky numbersreally bring good luck？different people have different views on it． 注：一个段落有时很适宜以问句开始，考生应掌握这一写作方法。 11．表示结论 1）in short，it can be said that．．． 2）it may be briefly summed up as follows． 3）from what has been mentioned above，we can come to the conclusion that ．．． 例如： from what has been mentioned above，