例：It is very important.
rather, pretty, extremely, exceedingly, especially, exceptionally, immensely, fairly, extraordinarily, particularly, remarkably, awfully 【替换范例：It is rather important.】
例：Studying English is important.
1) significant, key, dominant, crucial, critical, essential, vital 【替换范例：Studying English is significant.】
2) of great importance, of great significance【替换范例：Studying English is of great importance.】
例：This is my point of view.
opinion, view, viewpoint, statement, belief, position, standpoint, understanding, judgement, argument【替换范例：This is my opinion.】
例：This is the reason for it.
explanation【替换范例：This is the explanation for it.】
例：This is an important factor of the issue.
element【替换范例：This is an important element of the issue.】
例：The following reasons can explain my opinion.
demonstrate, illustrate, clarify, justify, account for【替换范例：The following reasons can demonstrate my opinion.】
例：I think that it is very important.
believe, argue, maintain, hold, consider, reckon【替换范例：I believe that it is very important.】
例：It can facilitate economic development.
help, promote, boost, encourage, advance, motivate, improve, forward, stimulate【替换范例：It can boost economic development.】
例：The method can be very useful.
helpful, conducive, favorable (favourable), advantageous【替换范例：The method can be very helpful.】
例：The general public will support this activity.
people, the public, everyone, everybody, folk, folks, individuals, persons【替换范例：Folks will support this activity.】
例：Many students think that it is a great proposal.
outstanding, extraordinary, amazing, excellent, marvelous (marvellous), wonderful, remarkable【替换范例：Many students think that it is an excellent proposal.】
例：I approve of this opinion.
support, favor (favour), back, advocate, agree with, endorse【替换范例：I support this opinion.】
例：I object to this opinion.
disapprove of, disagree with, oppose【替换范例：I disagree with this opinion.】
例：Many students start to worry about their health.
lots of, a lot of, a number of, numerous, a large quantity of, plenty of, quite a few【替换范例：Lots of students start to worry about their health.】
例：The data between 2005 and 2010 show a rising trend.
tendency【替换范例：The data between 2005 and 2010 show a rising tendency.】
例：The enrolment rate has increased fast since 2001.
rapidly, quickly, swiftly, sharply【替换范例：The enrolment rate has increased rapidly since 2001.】
例：The enrolment rate has increased since 2001.
grow, rise, go up【替换范例：The enrolment rate has grown since 2001.】
例：The enrolment rate has increased quickly and suddenly since 2001.
surge, soar, shoot up, rise steeply/sharply【替换范例：The enrolment rate has surged since 2001.】
例：The enrolment rate has decreased since 2001.
drop, decline, shrink【替换范例：The enrolment rate has dropped since 2001.】
例：The enrolment rate has decreased quickly and suddenly since 2001.
plunge【替换范例：The enrolment rate has plunged since 2001.】
例：She likes eating and drinking.
not only... but also..., as well as【替换范例：She likes not only eating but also drinking.】
1) but, yet【若but/yet在同一句话中连接两个句子，需在but/yet前加逗号】
例：His mother won’t be there, but his father might be there.
例：His mother won’t be there. However, his father might be there.
1） even if/even though/although/though+句子
例：Even if it was cold outside, I went out.
例：Although students played well, we still lost the game.
2） in spite of/despite+名词/名词性词组
例：In spite of his age, he still leads an active life.
4. 表递进 【通常用在句首，需要用逗号和后面的内容隔开】
例：Moreover, it is also good for other people.
furthermore, in addition, additionally, what is more, besides, then, plus【替换范例：Furthermore, it is also good for other people.】
1) due to, because of, owing to【后接名词或名词性短语】
例：I went to the hospital due to my illness.
2) for, because, for the reason that, as, due to the reason that, since, in that, owing to the fact that 【后接句子】
例：I went to the hospital for the reason that I was ill.
1) so 【连接两个句子时，需在第一个句子末尾加逗号】
例：I was ill, so I went to the hospital.
2) therefore, as a result, thus, accordingly, as a consequence, consequently, hence【通常与前一句构成因果关系】
例：I was ill. Therefore, I went to the hospital.
7. 表列举 【用在事例型论据的句首】
例：For example, Jack went home after school.
for instance, taking…as an example, to give an example【替换范例：Taking Jack as an example, he went home after school.】
first, firstly, to start with, to begin with, first and foremost, first of all
例：First, it is important for our country.
second, secondly, besides, next, moreover, furthermore, in addition, additionally, what is more, then
例：Moreover, it is important for personal development.
at last, finally, last but not least
例：Finally, it is necessary to protect our environment.
例：To sum up, studying English is important.
in a word, in summary, in conclusion, on the whole, to summarize, in brief, to conclude, to conclude from the above discussion, in short【替换范例：In a word, studying English is important.】