※开头：
When it come to ..., ome think ...
There i a public debate today that ...
A i a common way of ..., but i it a wie one?
Recently the problem ha been broughtintofocu.
※提出观点：
Now there i a growing awarene that...
It i time we explore the truth of ...
Nowhere in hitory ha the iue been more viible.
※进一步提出观点：
... but that i only part of the hitory.
Another equally important apect i ...
A i but one of the many effect. Another i ...
Beide, other reaon are...
※提出假想例子的方式：
Suppoe that...
Jut imagine what would be like if...
It i reaonable to expect...
It i not urpriing that...
※举普通例子：
For example (intance)...
... uch a A,B,C and o on (o forth)
A good cae in point i...
A particular example for thi i...
※引用：
One of the greatet early writer aid ...
"Knowledge i power", uch i the remark of ...
"...". That i how b comment (criticize/praie...).
"...". How often we hear uch word like thee.
※讲故事
（先说故事主体），thi tory i not rare.
..., uch dilemma we often meet in daily life.[由好作文www.hAOzuowEn.com整理]
..., the tory till ha a realitic ignificance.
※提出原因：
There are many reaon for ...
Why...., for one thing...
The anwer to thi problem involve many factor.
Any dicuion about thi problem would inevitably involve ...
The firt reaon can be obviouly een.
Mot people would agree that...
Some people may