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1.…is a very popular topic which is much talked about not only by …but also by …
家庭人口多好还是家庭人口少好是一个非常通俗的主题，不仅是城里人，而且农民都经常谈论这个问题。Whether a large family is a good thing or not is a very popular topic which is often talked about not only by city residents but by farmers as well.
2.There is no denying the fact that…
There is no denying the fact that air pollution is an extremely serious problem: the city authorities should take strong measures to deal with it.
3.As is known to all,…
As is known to all, fake and inferior commodities harm the interests of consumers.(=do a lot of harm to the interests of consumers)
4.More and more people are realizing the importance of …
Today an increasing number of people have realized that law education is of great importance .In order to keep law and order, very one of us is supposed to get(=receive)a law education.
5.From what I have mentioned above we can see clearly that…
从上面我所提到的，我们可以清楚地看到，电视暴力对青少年的影响是极其深远的。From what I have mentioned above, we can see clearly that violence on TV has (a) great influence on young adults’ behaviour.(或 teenagers’ behavior 或 youngsters’ behavior)
I....has both advantages and disadvantages.……既有利又有弊。例如：
1.Obviously television has both advantages and disadvantages.
2.Living in a city has both advantages and disadvantages.
3.Com pared with cars，bikes have their advantages and disadvantages.
1.Although computers bring people a lot of convenience，they have many
2....has many advantages.For example，...However，just as every
coin has two sides，...has its disadvantages.
(本例将利弊分开讲，转折过渡自然。just as every coin has two sides也很值得背诵。)
II....play(s)an important role /part in...……在……中扮演重要角色/起重要作用。例如：
1.Computers play an important role in science and technology.
2.Computers play a more and more important role in our life.
Computers play an increasingly important role in our studies.
3.Education plays an important part in developing our mind.
4.Addiction to alcohol and drugs play a role in homelessness.
1.Advertisement plays an informative role in our daily life.
2.In the past，letters played a decisive role in long-distance
communication.But now ，telephone，email，fax have taken their place.
III.With the development of...，随着……的发展，例如：
1.With the development of our economy，m any Chinese families can
afford a car.
2.With the development of our economy and society，pollution is more
and more serious.
3.With the rapid development of science and technology，people can get
a college degree by taking online-courses at home.
4.With the current social and technological developments，employees
with more knowledge and higher academic degrees are needed.
1.With the rapid increase of China's population，housing problem is
becoming more and more serious.
2.With more and more women entering society，people's attitude towards
women is changing.
3.With the deepening of Chinese reform and opening up，an increasing
number of Chinese
families can afford a car.
随着中国改革开放的深入，越来越多的中国家庭买得起车了。(“越来越多”除了常用的more and more外，还可以用an increasing number of， a growing number of，a significant number of，a great number of等来表达。)
IV.When it comes to...，some people think /believe that...，others argue /claim that opposite /reverse is true.There is probably some truth in both arguments/statements，but...当说到……，有些人认为……，但另一些人则持相反的观点……。这两种观点可能都有点道理，但……。
本结构先用when it comes to ...引出话题，再用some...others
...这个对立的结构引出了两种相反的观点，然后说There is some truth in
TV，a good thing or bad thing
When it comes to TV，some people believe that it is extremely valuable，as it provides relaxation， entertainment and education. Others argue that it is harmful for it begins to control our lives and deprives people of time to do other activities.There is probably some truth in both sides.But we must realize that television itself is neither good or bad.It is the uses to which it is put that determines its value to society.