（I）说明原因型
　　模块（一）
　　Nowadays ,there are more and more XX in some big cities . It is estimated
　　that ( 1 ).
　　Why have there been so many XX ? Maybe the reasons can be listed as follows.
　　The first one is that ( 2 ) .Besides,( 3 ) . The third reason is ( 4 ).
　　To sum up ,the main cause of XX is due to ( 5 ) .
　　It is high time that something were done upon it. For one thing ,( 6 ).
　　On the other hand ,( 7 ). All these measures will certainly reduce the
　　number of XX .
　　注释：
　　（1）用具体数据说明XX现象
　　（2）原因一
　　（3）原因二
　　（4）原因三
　　（5）指出主要原因
　　（6）解决建议一
　　（7）解决建议二
　　Generation gap between parents and children
　　Nowadays , there are more and more misunderstanding between parents and
　　children which is so- called generation gap . It is estimated that (75 percentages
　　of parents often complain their children's unreasonable behavior while children
　　usually think their parents too old fashioned).
　　Why have there been so much misunderstanding between parents and children?
　　Maybe the reasons can be listed as follows . The first one is that ( the two generations,
　　having grown up at different times, have different likes and dislikes ,thus the disagreement often rises between them) . Besides(due to having little in common to talk about , they are not willing to sit face to face ) . The third reason is (with the
　　pace of modern life becoming faster and faster , both of them are so busy with their
　　work or study that they don't spare enough time to exchange ideas ).To sum up ,the main cause of XX is due to ( lake of communication and understanding each other) .
　　It is high time that something were done upon it. For one thing (children should
　　respect their parents ).On the other hand ,( parents also should show solicitue for
　　their children). All these measures will certainly bridge the generation gap .
　　第二天：
　　（I）说明原因型
　　模块（2）
　　In recent years , xx has caused a heated debate on ( 1 ).
　　The factors for ( 2 ) .First of all ,( 3 ).Then , there
　　comes a case that ( 4 ). Moreover , ( 5 ) . Especially
　　when ( 6 ) .
　　Indeed, these unique points can be collected theo remind
　　people that ( 7 ).In this way ,we should behave just like
　　( 8 ).
　　The impact of Television
　　In recent years , with the development of science and
　　technology ,80 percent of all homes in China have satellite
　　TV , offering as many as 50 channels .It has caused a heated
　　debate on (the impact of television on children ). Many
　　parents　are worried about the impact of so much television
　　on children.
　　The factors for (parents' worry is that children are indulge in
　　television and spend too much time on it .) .First of all ,(with so
　　many programs to choose from , children are not getting as much
　　exercise as they should ).Then , there comes a case that ( some
　　studies have show that excessive watching of television by millions
　　of children has lowered their ability to achieve in school ).
　　Moreover , ( the effect on children's minds are more serious than
　　the effect on children's bodies ) . Especially when ( the children
　　are too small to judge what programs are suit to them ) .
　　Indeed, these unique points can be connected to remind
　　parents that ( they should pay close attention to and responsibilities
　　for supervising their children's TV viewing ).In this way ,children
　　will not be influented too deeply .