3)观点法——开门见山，直接了当地提出自己对要讨论的问题的看法。
[1] Now people in growing/significant numbers are beginning/coming to realize/accept/(be aware) that...
[2] Now there is a(n)growing awareness/recognition of the necessity to....
[3] Now people become increasingly aware/conscious of the importance of ....
[4] Perhaps it is time to have a fresh look at the attitude/idea that....
4)引用法——先引出名人名言或者有代表性的看法，来引出文章要展开论述的观点。
[1] "Knowledge is power." This is the remark made by Bacon. This remark has been shared by more and more people.
[2] "Education is not complete with graduation." This is the opinion of a great American philosopher. Now more and more people share his opinion.
[3] "...." We often hear statements/words like those/this.
[4] We often hear such traditional complains as this "....".
5)比较法——通过对过去、现在两种不同的倾向、观点的比较，引出文章要讨论的观点。
[1] For years, ...had been viewed as .... But people are taking a fresh look now. With the growing ..., people ....
[2] People used to think that ... (In the past, ....) But people now share this new idea.