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……問題引起了關注。
3、Nowadays（overpopulation）has become a problem we have to face.現今，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.網際網路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生了一些嚴重的問題。
1、do good to （對……有益），do harm to （對……有害）
例句：Reading does good to our mind.讀書對心靈有益。
Overwork does harm to health.工作過度對健康有害。
2、Pose a great threat to. （對……造成一大威脅）
例句：Pollution poses a great threat to our existence.
汙染對我們的生存造成一大威脅。
3、There is no denying that + S + V …（不可否認的……）
例句：There is no denying that the qualities of our living have gone from bad to worse.
不可否認的，我們的生活品質已經每況愈下。
1、it seems to me that something is not valued highly enough… the possible reason may be… 在我看來，對某事的重視還不夠，可能的原因或許是…。
2、but possibly the problem lies not so much in （our institutions） as in （our attitudes）。 但可能問題出在我們的態度上，而不是我們的機構上。
3、there are many factors that may account for this result, but the following are the most typical ones. First, … 有許多因素可解釋這一結果，但如下的是最典型的因素。第一，…。
4、there are many reasons responsible for this instance, and the following are the typical ones. 造成這一情況有許多原因，如下的原因就很典型。
5、there are similar reasons when we consider that … 當我們考慮…有類似的原因。
6、there are numerous reasons why …， and I shall here explore only a few of the most important ones. 有許多原因導致…在此我只想就最重要的幾個探討一下。
7、it is easy to understand the reasons for this （prejudice against） something. One problem is that to most of us, doing something looks like doing something. 理解造成對某事的偏見的原因並不困難。問題是對我們大多數人來說，做某事似乎就是做某事。