引出开头
1：It is well-known to us that...... (我们都知道......) =As far as my knowledge is concerned, ...(就我所知...)
2：Recently the problem of...... has been brought into focus. ==Nowadays there is a growing concern over ...... (最近......问题引起了关注)
3：Nowadays (overpopulation) has become a problem we have to face. (现今，人口过剩已成为我们不得不面对的问题)
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. (互联网已在我们的生活扮演着越来越重要的角色，它给我们带来了许多好处但也产生了一些严重的问题)
5：It is a common belief that......=It is commonly believed that...... (人们一般认为......)
6：A lot of people seem to think that...... (很多人似乎认为......)
7：It is universally acknowledged that + 句子(全世界都知道...)
作者：青黛
来源：知乎
