一、引出开头

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：Nowadays（overpopulation）has become a problem we have to face.
4：Internet has been playing an 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 +

二、表达不同观点

1：People's views on……vary/differ from person to person. Some hold that……However, others believe that……
2：People may have different opinions on……
3：Attitudes towards （drugs）vary from person to person.==Different people hold different attitudes towards（failure）
4: There are different opinions among people as to……

三、表示结尾

1：In short, it can be said that……
2：From what has been mentioned above, we can come to the conclusion that……
3：Taking all these factors into consideration, we naturally/reasonably come to the conclusion that……
4：Hence/Therefore, we'd better come to the conclusion that……
5:There is no doubt that (job-hopping)has its drawbacks as well as merits.（毫无疑问，跳槽有优点也有缺点）
6：All in all, we cannot live without……,but at the same time we must try to find out new ways to cope with the problems that would arise.