1：It is well-known to us that……(我們都知道……)==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……問題引起了關(guān)注)

3：Nowadays(overpopulation)has become a problem we have to face.(現(xiàn)今，人口過剩已成為我們不得不面對的問題)

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.(互聯(lián)網(wǎng)已在我們的生活扮演著越來越重要的角色，它給我們帶來了許多好處但也產(chǎn)生了一些嚴重的問題)

5：With the rapid development of science and technology，more and more people believe that……(隨著科技的迅速發(fā)展，越來越多的人認為……)

6：It is a common belief that……==It is commonly believed that……(人們一般認為……)