People have different views on this question.
People’s ideas vary/differ on this issue.
Generation gap is a problem that we are confronted by.
Generation gap is now a problem we have to face.
The environmental problem is a serious problem in modern society.
The argument is convincing.
And, but, or
not only…but also…,
主语+谓语 + by either doing A or doing B
主语+谓语not only in terms of A, but more importantly/seriously，in terms of B
Most children are spoilt, not only in terms of care and attention, but more seriously, material ways.
句子 + by either doing A or doing B
Students’ behaviors can be improved by either encouraging students to wear well-designed uniforms or guiding them to participate in activities which reveal the spirit of team work.
Obesity can be relieved by not only forming good dietary/eating habits, but more importantly taking more exercises, such as jogging and rope skipping.
认为： insist, maintain, hold, suggest, argue,
支持：favor, propose, support, agree, advocate,
(be for, be in favor of)
Some people do believe that
Some people are fully convinced that
Some people assert that
Some people deem that
Some people argue that
Some people claim that
Some people doubt that
Some people deny that
What I learn
What I see
What I need
1. It is suggested in the graph that…(indicate, demonstrate, illustrate)
It is reported that/estimated that/proved
It is well-known/generally accepted/universally acknowledged
2. Whether S +V is a controversial issue.
Whether we should make effort to/endeavour to preserve endangered species is …
Whether we should do…depends on whether S +V
Whether we will succeed depends on whether we persist.
3. What we should do is to do….
We should protect animals.
What we should pay attention to/ emphasize/stress is to do
What teachers should emphasize is to tell students to practice more.
What we are faced with is that …
What we are confronted by is…
the depletion of natural resources
What we should solve immediately is that…
What concerns us most is…
What we am concerned with
主语从句：it is …
It is important/vital/crucial/pivotal/essential/significant(… 很重要)
It is clear/evident/obvious/manifest/as clear as crystal/quite common(。。。 很明显)
It is undoubted/undeniable/doubtless (。。。 毋庸置疑)
It is a pity/a shame/a common sense/practice( 这是个常识)
It is well/increasingly/widely/commonly/generally known/recognized/accepted/acknowledged (众所周知)
It is conceivable that 可想而知
It is desirable/admirable that 可取的
It is advisable that 最好做某事
It is probable/possible/likely that 可能的
It is imperative that 必要的
it is preferable/profitable that
It is hazardous/risky/perilous that 危险的
It must be stressed out that 必须要指出
It must be admitted that 必须要承认
It is reported that 据报道
It is suggested that 有人建议
It is assumed that 有人认为
It is estimated that 据估计
It is always the case that 情况总是这样的
It is not always the case that 情况不一定总是这样的
It follows that由此可见，
My first reason is that academic courses withstand the test of time and represent the essence of ancient cultures.
One advantage of the application of computers in education is that they can enrich the traditional teaching methods to a great extent.
常用的：the fact/idea/belief/recognition/suggestion/proposal/attempt/effort that
Be based on the belief that 基于这样的想法
From the above discussion, we can safely draw the conclusion that…
There is no evidence that…
Despite the fact that….
neglect/ignore/overlook/ lose sight of / be blind to/fail to consider the fact that忽视了某个事实
The government should not be blind to the fact that imprisonment of criminals is the comfort to the victims at the very least.
University students should bear total expenses for their tuition on the generalization that university students usually earn much more than people without a degree.
定语从句： 名词(短定语)人，who,物， which, that…
Those who favor this view give the following reasons.
Those who are addicted to the Internet tend to be isolated, unsociable or even depressed.