我的模考作文（周日开考啦，请多指教，考后必回报CD）

Societies are often divided into two groups when it comes to the problem of energy using. Some people believe that renewaable energy will dominate the energy market in the near future, while other people insist that traditional resources of energy will never be replaced. As far as I am concerned, although renewable energy is facing with the barrier of relatively high cost, it is inevitable that these cleaner sources of energy will finally dominate.

Recently the world’s attention has been drawn on the fluctuation of oil gas prices. Petroleum, as the main source of energy for indutrialization progress, has tripled its price in the last thirty years. The concern about its present dorminance is obvious among scientists, because we can not sustain a high growth rate in economics if human beings rely on the limited storage of petroleum on the earth. As a soring amount of petro is consumed each day, the quantity of the rest part diminishes. It is predicted that the total energy that can be used for human progress can sustain another 60 years. As a result, human has to find another way out after that.

Under these ciucumstances, a substitution for traditional energy is needed and the solution is the so-called renewable energy. Renewable sources of energy, such as sunlight, wind and flowing water, can be converted into energy with little or even no hazard to the natural world. These sources are always conveniently availbale to human beings, while we have handled the technology to finish the convertion. The ample supply of these resources proofs to be an idel to maintain the growing demand of energy in the modern world, which makes it the main reason for scientists to hold the belief that renewable energy will finally be a dominance.

Appealing though the prospect of renewable energy is, there lies a critical barrier against its broad application. The cost to convert these sources such as sunlight and wind is relatively high, at the same time, special and expensive devices are also needed. Hwever, as the promotion of technical innovation, one should believe this is just a barrier that will be conquered soon.

我觉得楼主写得很好了，至少那么多长句子我写不出来

呵呵……长句子写得比较顺手。但是似乎觉得有些单薄呢……

感谢楼主

能否介绍一下经验

我已经联系好老师了，就等着英语了，我是个新手，能否帮助一下啊？我的邮箱是weiwuchang(A) hotmail.com.谢谢了，先，真的。

一个小问题，第一个单词似乎写错了？应该是scientists吧？

Appealing though the prospect of renewable energy is, there lies a critical barrier against its broad application.
        

这句话有木有语病？

楼主想用强调，于是把appealing提前，但貌似Appealing不能放在连词though前面，否则is appealing就连不上，前后脱节。设想一下一个例子：When you are coming, there is a gal waiting for you. 按照楼主的说法，即：Coming when you are, there is a gal waiting for you. 至少我从小到大没有学过coming可以提到连词when前面的语法。

我赞成的正确强调句是：

Though appealing the prospect of renewable energy is, there lies a critical barrier against its broad application.

或者干脆全部倒装：

Though appealing is the propect of renewable energy, there lies a critical barrier against its broad application.

另外，一些中国的英语老师，特别是搞四、六级的说，there has是不正确的说法，正确说法是there is。这个说法也受到部分保守的ESL teachers支持。但到国外的正式网站，国外论文中，there has频频出现。但为了严谨起见，也避免当碰到一个保守评卷老师时，这个地方会造成非议。所以还是用there is比较理想。

我想，楼主的there lies同样适合这种情况。所以建议用there is。

The cost to convert these sources such as sunlight and wind is relatively high, at the same time, special and expensive devices are also needed.
  

这句话有木有语病？

 at the same time是副词，不能作连词用，而当两个句子连成一个并列复合句时，必须用连词。

所以我赞成的正确说法是：

作文可以顶格吗？

完全可以！

建议把and和at the same time同时去掉，换成meanwhile.

因为此处如果再使用and的话，整句话里就出现了三个and,重复率过高了。