理由类作文
S1:topic
when asked about...a vast majority of... people claim that...
S2:My attitute towards it
Contrary to the widely-held belief, I think differently.
S3:thesis
There are several reasons for my preference/choice.
S4:reason I
To begin with,...
S5:supporting detail
A good example of this can be offered by...
S6:reason II
Another reason is...
S7: supporting detail
Personal experience shows that...
S8: reason III
Perhaps the most important reason is...
S9: supporting detail
There are instances when...
S10:conclusion
Taking all these into account,...it comes as no surprise that...

比较类作文
S1:Topic: the subjects to be compared
With the development of science and technology,... plays an important part in our deily life.
S2:Thesis:Your preference for B over A
While it is commonly belived that A...,I believe B...
S3:A's advantages
To be sure,A...
S4:But A's disadvantages1
But the chief defects/faults are...
S5:A's disadvantages 2
Researchs shows that...
S6:A's disadvantages 3
On the other hand, the advantages of B...carry more weight than advantages of A...
S7:B's advantages 1
For one thing, B...
S8:B's advantages 2
For another, B also...
S9:B's advantages 3
Although B can not...,few things can be compared with B in terms of...
S10:conclusion
The dvantages/singnificance of B is more than ...

分析篇
S1:Topic
The other day, I happened to.../ a friend of mine...
S2:Thesis(My attitute towards if)
The case is not rare, it is one of the thousands who benefit from...
S3:Thesis(more specific)
One of the (benefits derived from/harmful effects on)...is...
S4:Benefit(or Effect) I
To have a better understanding of...we may look at...
S5:detail
There is hardly a man or a woman who doesn't...
S6:Benefit(or Effect) II
Another effect is concerned with...
S7:detail
A typical ecample of this is...
S8:Benefit(or Effect)III
Of all the benefits resulting from,nothing is as significant as...
S9:detail
Just imagine...
S10:Conclusion
Thus, it can be seen that...

评论类
S1:Topic
Why should we...?Such questions as these are often asked, especially by those...
S2:Thesis
The answers to these questions often vary from person to person.
S3:Its advantages or one side's opinion
Some people maintain that...
S4:detail 1
There is no doubt that...
S5:detail 2
It certainly offer people greater opportunity to...
S6:transition
For all these advantages, it also brings its own problems...
S7:its disadvantages or the other side's opinion
The main problem with it is that...
S8:detail 1
It is objectd on the grounds that it contributes to rise in...
S9:detail 2
Besides.../In addition...
S10: the balanced view
Whether it is good or not, one thing is certain...