如何检测英语作文语法错误的原因【一】
近视眼的机理
当人眼球在调节松弛状态下，来自5米以外的平行光线经眼的屈光系统屈折后，不能聚焦在视网膜上者称非正视眼，又称屈光不正。屈光不正分为近视、远视和散光三大类。所谓近视眼是眼在调节松弛状态下，平行光线经眼的屈光系统屈折后形成的焦点在视网膜之前，在视网膜上形成一个弥散光环，所以看远处目标模糊不清。从近视眼视网膜发出的光线为集合光线，其焦点位于眼球和无限远之间，称为近视眼的远点。如被看目标恰好位于近视眼的远点上，则可在视网膜上形成焦点，所以近视眼看近距离目标清晰。
近视眼的病因
近视眼按程度分为轻度(-3.0D以下，中度(-3.0D--6.0D，高度(-6.0D以上，近视眼的病因目前尚不完全了解，可能与下列因素有关。
1.遗传因素：据调查近视有一定遗传倾向，一般认为高度近视属常染色体隐性遗传，中低度近视属多基因遗传。
2.发育因素：婴幼儿时期眼球较小，常为生理性远视，随着年龄的增长，眼轴逐渐加长而趋向正视，如发育过度则形成近视。
3.外因：青少年学生与近距离工作者中近视眼较多，这表明，近视眼的发生和发展与近距离工作有密切关系，尤其是照明不足，阅读距离过近，阅读时间过久，字体不清或过小，以及姿势不良等都与近视的发生有关。?
4、轴性近视：是指眼轴较长而眼的屈光力正常，这是最常见的一种近视。常见为发育和遗传有关，不良的卫生习惯加速发展，如阅读时灯光照明不合理，坐姿不端正，距书本及工作目标太近，以及过度用眼等。
5、屈光性近视：是指眼轴正常但眼的屈光力增强。常见有：
A.角膜膨隆，圈袍角膜。
B.晶状体异常，球悬晶体，晶体位置倾斜。
C.睫状肌痉挛，引起晶体过度调节。
如何检测英语作文语法错误的原因【二】
How to prevent the H7N9?
As is well known,the A flu is spreading throught our country. However, if we negnect it, the deadly H7N9 may cause more infectors,or even more deaths. So what is the most important is that we should take some effective measures to prevent it.They can be listed as follows.
Firstly,it is necessary for you to realize the Avian flu can be prevented if you develop good living habits. For example,you shouldn’t forget to wash your hands before meals.Besides,don’t spit everywhere and try to cover your mouth or nose with paper or hankerchiefs when you have to cough or sneeze.What’s more, remember to wear the mouth-cover if you have to go to the public places, such as the crowded cinemas,supermarkets, buses,where the A flu may spread easily.
Secondly,of course, taking exercise more often and taking good sleep to build your body are wise choices for you to reduce the risk of being infected.
Last but not the least, if you are unlucky to be infected with the slight flu cold, try to stay at home,and take some medicine. Do pay attention to your daily body temperature. If you have a high fever, go to the hospital without delay for further treatment. Make sure you are not expected to come back to school before the cold or flu is cured.
Only by doing like this can you prevent or defeat the A flu in the end.
如何检测英语作文语法错误的原因【三】
事实上，雾霾天气持续，空气质量下降，并不是今年的新现象。这几年，每到秋冬特别是入冬以后，我国中东部地区不时会遇这样的情况，其中既有气象原因，也有污染排放原因。
中央气象台首席预报员马学款表示，近期中东部地区出现的雾在气象学上称为辐射雾，其形成原因主要有三点：一是这些地区近地面空气相对湿度比较大;二是没有明显冷空气活动，风力较小，大气层比较稳定;三是天空晴朗少云，有利于夜间的辐射降温，使得近地面原本湿度比较高的空气饱和凝结形成雾。
大范围雾霾天气主要出现在冷空气较弱和水汽条件较好的大尺度大气环流形势下，近地面低空为静风或微风。受近地面静稳天气控制，空气在水平和垂直方向流动性均非常小，大气扩散条件非常差。受其控制，城市无论规模大小，其局地交通、生活、生产所需的能源消耗的污染物排放均在低空不断积累。与此同时，由于雾霾天气的湿度较高，水汽较大，雾滴提供了吸附和反应场所加速反应性气态污染物向液态颗粒物成分的转化，同时颗粒物也容易作为凝结核加速雾霾的生成，两者相互作用，迅速形成污染。
环保专家表示，如果在冬季遇到长时间雾霾过程，通常在北方地区因为采暖期猛增的能源消耗排放，中等以上城市人口集中排放量大的主城区连续三天的空气污染物积累就可能达到重度污染的程度，在南方地区如果生产和交通排放量大也可能达到重度污染的程度。
如何检测英语作文语法错误的原因【四】
运用图像辅助英语教学，可解决英语语言的可理解性问题、有趣性问题及学生的情感焦虑因素等问题，增加学生了接受信息的输入量，具有不可估量的潜力，对提高英语教学质量有很大的促进作用。利用图像输入以期解决以下问题：利用图像输入辅助教学能否解决输入的可理解性、趣味性问题；利用图像输入辅助教学能否降低情感焦虑因素，激活学生的英语表达欲。
如何检测英语作文语法错误的原因【五】
（一）图像的解释
图像通常指image，icon，picture和它们的衍生词。在人类文明的历史上，图像先于文字产生，象形文字就是从图形变化来的，先有图再有字。自然界是人所面对的对象，图像是对自然的模仿，也是人类认识自然的方式。文字是图像的抽象化，是人类认识自然和交流信息的高级形态。人类对图像的接受是一种视觉的***和饥渴，通过图像来识别很多东西，同时也可满足自己的一种审美要求。
图像输入策略是用来激励学习者学习语言的兴趣的，而兴趣又是基于理解之上的。否则，学习者的学习动机就不会被激发，从而导致对自己缺乏自信，甚至产生焦灼感。因此，教师在输入时，要尽可能选择学习者感兴趣的并能使他们自然灵活掌握的策进行图像输入，指有助于学生感性地理解语言材料的各种工具和方法，包括直观教具（用于课堂教学的视觉形象材料，如黑板、道具、实物等）和电化教学设备（利用光、聲、电原理设计的各种现代化视听工具，如幻灯、图影、录音机、录像机等）。这两类直观手段都能摆脱课堂教学时空的束缚，将各种生活情景生动活泼地展现在学生眼前，从而有利于学生感知和思维。它能提供大量真实逼真的语言交际情景，使教师传递的语言信息更具形象性、层次性、连贯性和逻辑性，有助于学生按逻辑顺序思维，加速对外语信息的理解和吸收；有助于学生对外语材料的感知、理解、吸收和内化，有助于强化学生的注意力，引导学生对知识的整理和归纳。学生在此状态下，兴趣浓，积极主动性高，注意力集中，思维敏捷，想象活跃，加速了语言输入的过程。
（二）创设运用语言情景
图像输入主要是用来创设情景的。学生在特定的情境中，其主动参与意识会更强。通过创设情景，学生一开始就进入口语合作的氛围，激发学生说话的兴趣，给学生提供语言交流的平台，使学生在情景中运用课文的套句、语汇，两人或多人一组进行表演。教师要将情景与日常生活结合起来，努力给学生创造一个心理自由和心理安全的环境，让他们抛开害羞、怯懦等不良情绪，积极主动地参与，充满隋感地倾诉。成功的外语课堂教学应在课内创设更多情景，让学生有机会运用自己所学的语言材料。那么如何创设语言情景呢？扩充教学手段，丰富课堂内容，提供学习示范是关键。可利用多种手段或媒体，如挂图、投影图片、录像、声音模拟等图像输入来创设语言情景。学生置身于这种情景之中，在教师的启发下便会情不自禁地想用所学的语言来表达自己的感受、看法、设想或者是疑问。这种疑问可以是关于语言情景方面的，也可以是关于语言表达遇到的各种障碍，或者是自己创设的由感而知的与主题有关的感受及设想，由此与主题相关的诸多内容也逐渐地丰富起来，学生应尽可能全面地用语言倾诉出来。
如何检测英语作文语法错误的原因【六】
Nowadays, many famous university campuses have become one of the popular tourist attractions. It has been shown on TV and on the radio that every year thousands and thousands of middle school students visit Tsing Hua University and Peking University and other famous universities in China. In the place far away from the capital city, the local students also visit the universities famous in their own province.
So far as the present situation is concerned, is it a good or bad thing to open the university campus for tourists? Different people have different opinions. On one hand, some people argued that it is a good thing for the students to visit the famous university campus in that it can enable the middle students to get more information about the university and they can have enough time and opportunity to prepare themselves with the chance to get into the university. On the other hand, some people hold a negative view about this phenomenon. In their opinion, the public tourism will have negative effect on the universities because it will not only do harm to the environment but also to the intellectual atmosphere.
In my opinion, the tourism to the universities is not a good thing. The campus is mainly a place for study. With the increasing tourism on the campus, it will ruin the spiritual atmosphere in this learning field.
首先，提纯范文 “谋篇布局”及结构模板。
第一段：提出问题或现象。Nowadays, … … have become one of the popular … …. It has been shown on TV and on the radio that … ….
第二段：正反列举人们的看法。So far as the present situation is concerned, is it a good or bad thing to … …? Different people have different opinions. On one hand, some people argued that it is a good thing for … … in that … …. On the other hand, some people hold a negative view about this phenomenon. In their opinion, … … will have negative effect on … … because it will not only do harm to … … but also to … ….
第三段：摆明自己观点。In my opinion, … … is not a good thing. … … With the increasing … …, it will ruin … ….
其次，提纯范文“段落写作”。
段落写作分为统一性，连贯性和完整性三方面。
统一性(unity：段落开头的主题句应该做到不可太宽泛，也不可太具体，做到有较强的概括性才能使下文做到有的放矢的展开。范文第二段首句以设问的方式提出一个问题is it a good or bad thing就有很强的概况性。下文自然会一方面从好的方面说明，另一方面从坏的方面说明。
连贯性(coherence：关联词是使文章段落之间相互连贯的必要条件。范文中nowadays, on one hand, on the other hand, in one’s opinion即以“启承转合”递进的顺序是文章条理清晰，层层展开。
完整性(completeness：以设问句“So far as the present situation is concerned, is it a good or bad thing to open the university campus for tourists?”开头，这是平时较少运用的段落写作方式——设问法。“On one hand … …. On the other hand, … ….”是段落写作分类列举法的典型用法。
再次，提纯范文“句子写作”。
1. It has been shown that … …
类似句型：It is known to us that … …
It is said that … …
It is reported that … …
It is controversial that … …
2. “… … Tsing Hua University and Peking University and other famous universities … …。”——并列句。并列句是简单的复杂句。但其运用方法并不简单，注意练习并接句的使用，会使句子显的更加饱满。
3. enable v. 使…能够
I gave him full directions to enable him to find the house.
4. in that = because
表“因为”的连词还有since, for, as，如：
The boy was absent because he was ill. = The boy was absent since he was ill.
此句以我们常用的人称开头，句式简单，我们可以通过把since提前改变句式，如：
Since the boy was ill, he was absent. 句式多样化。
最后，提纯范文“措辞”。
1. attraction n. 具有吸引力的事情。
2. thousands and thousands 成千上万的
形容“多”的表达方法：millions and millions
a multitude of
a great deal of
a large amount of
plenty of
many a
3. “some people argued that … …”中的“argue”并不是“讨论，辩论”的意思，而是“认为”。
I argue that … …
I maintain that … …
I claim that … …
I insist that … … = I think that … …
I hold that … …
I assert that … …
I assume that … …
4. negative adj. 否定的.，相反的
hold negative view = hold opposite opinions
5. phenomenon n. 现象
social phenomenon 社会现象
natural phenomenon 自然现象
6. intellectual adj. 聪明的= intelligent, bright, clever
(选词策略：使用最近所学的单词，如intellectual > intelligent > bright > clever
在分析并掌握范文之后，我们需要运用范文知识练习仿写。笔者运用2005年12月范文中的模板结构仿写了2006年12月的四级作文，以供参考：
1. 许多人喜欢在除夕夜看春节晚会
2. 但有些人提出取消春节晚会
3. 我的看法
Nowadays, the Spring Festival Evening has become one of the popular topic and attractions during every traditional New Year’s Eve. It has been shown on TV and on the radio that every year thousands and thousands of Chinese people appear to be accustomed to enjoying the sights and sounds of a brilliant feast, while gathering with their beloved family.
However, an increasing number of people have voiced different opinions towards it. So far as the present situation is concerned, is it a good or bad thing to cancel the Spring Festival Evening? Different people have different opinions. On one hand, some people argued that it is a good thing to amuse the audience in that it is composed by a numerous adequate programs, such as the emotional song, the graceful dance, the funny short sketch, the amusing comic dialogue, the delightful magic, and the marvelous acrobatics and so on. On the other hand, some people hold a negative view about this phenomenon. In their opinion, the Spring Festival Evening will have negative effect on the family harmony because it will not only do harm to having the talks between family members on the Spring Festival Eve but also to enjoying the gourmet meal in a fancy restaurant.
In my opinion, the Spring Festival Evening is a good thing. It may not remain a must for all people, but it can bring us a strong sense of festivity and serve as an alternative among the variety of holiday activities. With the increasing audience of the Spring Festival Evening, it will ruin a distinctive culture during the Spring Festival vacation.
