四年级艺术作文300字怎么写？( 四 )

二、说明原因型模块
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 the remind people that (7).In this way, we should behave just like (8).
相应作文：
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 exceive 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 influenced too deeply.
三、说明原因型模块
For most of us today, (1).From above, we can find that the reasons why (2)are as follows.The primary reason, I think, is (3).Second, (4).The third reason, actually, is (5).The significance for (6).Therefore, (7).
注释：
1、人们针对XX的态度和举措
2、归纳现状
3、第一个原因
4、第二个原因
5、第三个原因
6、重申造成现状的最重要原因
相应作文：
Pollution Most of us today (recognize that environmental pollution has been a greatly serious problem.lots of plants trees corps are destroyed by bad air.many fish die of pois
2 onous water.thousands of people die from eating poisoned fish or breathing in gas.therefore, environmental pollution should be responsible for these diseases that are disabling, or bringing death not only to human beings, but also to wild life.)From above, we can find that the reasons why (environment are polluted more and more seriously)are as follows.the primary reason, I think, is (the reason of harmful substances into environment.for example, to prevent insects, farmers make use of great amounts of insecticides, so as to have bumper harvests.however, they pollute air, water and land ).Second,(the gas coming from the car engines and factories also make environment polluted badly ).the third reason actually is (the result of a growing population in the world.everyday, so much litter and waste are poured out from houses, also pollute the environment ).The significance for (controlling pollution) noted that it\\'s high time that more effective measures should be taken.Therefore, (new laws should be paed to limit the amount of pollutants from factories.moreover, in the households, there is an obvious need to reduce litter and waste.let\\'s make our good efforts, and the world will be a safer place to live for us).