以下给出一些常见的语法（是常见而非全部哈，事实上语法点实在太多了啥），仅供参考：
一、名词性从句
1．主语从句
What has caught our attention is /It is noticeable that the environment in both the rural and urban areas is deteriorating. 值得注意的是农村和城市的生态环境都在不断恶化。
It is universally acknowledged that environmental pollution becomes one of the most serious problems in China or even the world as a whole. 众所周知，环境污染问题是中国乃至世界面临的最为严重的问题之一。
2．宾语从句
Some people claim that government should be mainly responsible for the environmental pollution. 一些人认为政府应对环境污染负主要责任。
Many experts point out that, along with the development of modern society, it is an inevitable result and there is no way to avoid it. 许多专家指出这是现代社会发展必然的结果，无法避免。
3．表语从句
The fact is that he didn’t notice the car until too late. 事实上他根本没有注意到那辆车直到惨剧发生。
The question is why he likes the place so much. 问题是他为何如此喜欢这个地方。
4．同位语从句
It is an undeniable fact that environmental pollution becomes increasingly serious. 环境污染变得越来越严重是不可否认的事实。
No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily. 没有人能否认这一基本事实：对于一般工人来讲，轻松掌握这些技术是不可能的。
二、定语从句（运用广泛，句型灵活）
Bad books contain evil thoughts. In them, there might be much description about violence, superstition, and sex.
→ Bad books, in which there might be much description about violence, superstition, and sex, contain evil thoughts.
三、状语从句。
1. 原因状语从句：
Nonetheless, I am still in favor of space travel, for its merits far outweigh demerits. 尽管如此，我还是赞成太空探险，因为它的好处远远大于坏处。
2. 让步状语从句：
Although this view is wildly held, this is little evidence that education can be obtained at any age and at any place. 尽管这一观点被广泛接受，很少有证据表明教育能够在任何地点、任何年龄进行。
3. 条件状语从句：
If you want to achieve something or intend to fulfill one of your ambitions, you must work hard, make efforts and get prepared. 假如你要取得成就或要实现你的雄心壮志，你必须努力工作、艰苦奋斗、准备好条件。
4. 时间状语从句：
When it comes to education, the majority of people believe that education is a lifetime study. 说到教育，大部分人认为其是一个终生的学习。
5. 目的状语从句:
Millions of people have to spend more time and energy on studying new skills and technology so that they can keep a favorable position in job market. 成千上万的人们不得不花费的精力和时间学习新的技术和知识，使得他们在就业市场能保持优势。
四、倒装句。
Only if the government will take some appropriate measures, will this intractable problem be tackled. 只有政府采取适当的措施，这个棘手的问题才能被解决。
Now comes your turn. 现在到你了哈
五、虚拟语气；
Without air, there would be no living things.
But for your help, I couldn't have done it
It would produce bad results to do that.=If you did that/should do that, it would produce bad results.
六、强调句；
It is cars and factories that release a great deal of gases, polluting the environment. 汽车和工厂排放大量的废气，使得环境被污染。
七、被动语态。
Every means should be tried to protect the environment on which people live. 人们应竭尽全力来保护我们赖以生存的环境。
八、分词结构
Tourism, which is a rising industry, has become the major source of economy, playing crucial role in many Asian countries.
旅游业是一个新兴的行业，它成为经济的主要, 在很多东南亚国家起着尤为重要的作用。
To be more specific, government should stage some relevant laws or regulations to severely punish the factory producing a great number of pollutants and the people littering or spitting deliberately.
具体来说，政府应该出台相关法律法规对制造大量污染物的工厂及故意乱扔垃圾随地吐痰的人进行严惩。
九、插入语。
Computer, an indispensable part in our life, has brought us great conveniences. 电脑，我们生活中必不可少的一部分，给我们带来了极大的方便。
College students, lacking social experience, are easily cheated. 大学生，没有社会经验，容易上当受骗。
温馨提示：答案为网友推荐，仅供参考