一、~~~ the + ~ est + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
~~~ the most + 形容词 + 名词 + (that) + 主词 + have ever + seen ( known/heard/had/read, etc)
例句：Helen is the most beautiful girl that I have ever seen.
二、Nothing is + ~~~ er than to + V Nothing is + more + 形容词 + than to + V
例句：Nothing is more important than to receive education.
三、~~~ cannot emphasize the importance of ~~~ too much.(再怎么强调...的重要性也不为过。)
例句：We cannot emphasize the importance of protecting our eyes too much.
四、There is no denying that + S + V ...(不可否认的...)
例句：There is no denying that the qualities of our living have gone from bad to worse.
五、It is universally acknowledged that + 句子~~ (全世界都知道...)
例句：It is universally acknowledged that trees are indispensable to us.
六、There is no doubt that + 句子~~ (毫无疑问的...)
例句：There is no doubt that our educational system leaves something to be desired.
七、An advantage of ~~~ is that + 句子 (...的优点是...)
例句：An advantage of using the solar energy is that it won’t create (produce) any pollution.
八、The reason why + 句子 ~~~ is that + 句子 (...的原因是...)
例句：The reason why we have to grow trees is that they can provide us with fresh air./ The reason why we have to grow trees is that they can supply fresh air for us.
1. Nowadays,the Internet has been playing an important role in our everyday life It has brought a lot of benefits but has also brought some problems.如今,互联网已在我们生活中扮演越来越重要的角色，它给我们带来了许多好处，但也产生了一些问题。
2. With the development of our society，more and more people believe that knowledge is very important.随着社会的发展，越来越多的人认为知识很重要。
3. A lot of people think that knowledge is very necessary.很多人认为知识很必要。
4. People's opinions about the Internet are different Some think that it can bring a lot of benefits However, others think that it dose harm to our health.人们对互联网的观点各有不同，有些人认为互联网给我们带来了很多益处，然而，其他人却认为他对我们有害。
5. Everything has two sides and the Internet is not an exception ,it has both advantage and disadvantage.每个硬币都有两面，互联网也不例外，它既有优点有与缺点。
6. Human beings are facing a big problem ,the air pollution ,which is becoming more and more serious.人类正面临一个严重的问题，大气污染，这个问题变得越来越严重。