一、引出開頭
1：It is well-known to us that==As far as my knowledge is concerned,
2：Recently the problem of has been brought into focus. ==Nowadays there is a growing concern over
3：Nowadayshas become a problem we have to face.
4：Internet has been playing an increasingly important role in our day-to-day life. It has brought a lot of benefits but has created some serious problems as well.
5：With the rapid development of science and technology，more and more people believe that
6：It is a common belief that==It is commonly believed that
7：A lot of people seem to think that
8：It is universally acknowledged that + 句子
二、表達不同觀點
1：Peoples views onvary from person to person. Some hold thatHowever, others believe that
2：People may have different opinions on
3：Attitudes towards vary from person to person.==Different people hold different attitudes towards
4：There are different opinions among people as to
三、表示結尾
In short, it can be said that
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