此类作文要求对某一现象或事物的优点或缺点进行正反两方面的分析，最后得出结论或发表自己的看法。注意是针对一件事物，要与比较分析类相区分。
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Nowadays, there is a widespread concern over (the issue that)_________________. In fact, there are both advantages and disadvantages in X. Generally speaking, it is widely believed there are several positive aspects as follows. Firstly, _________________________. And secondly _________________________.
Just As a popular saying goes, "every coin has two sides", X is no exception, and in another word, it still has negative aspects. To begin with, _____________________. In addition, ______________________________.
To sum up, we should try to bring the advantages of X into full play, and reduce the disadvantages to the minimum at the same time. In that case, we will definitely make a better use of the X.
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X now plays such an important part in so many people’s lives that _____________________. Obviously, X has both advantages and disadvantages.
As is often pointed out that, X makes us know ________________ so that __________________. In addition, _________________________. Yet here again, there is a danger. The main problem with it is that _______________________________. It is criticized on the grounds that it contributes to ______________________. Besides, _________________________.
In any case, whether the ultimate of X is good or not, one thing is certain that __________________. It is the uses to which it is put that determine its value to society.
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X has many advantages. In the first place, ____________________________. Second, ___________________________. Third, ____________________________. For all these advantages, it is really worthwhile to _________________________________.
However, just as everything has two sides, there are some disadvantages in _______________. The most serious problem is ________________________. Besides, __________________________.
Therefore, given an opportunity to ______________________, one must consider both sides of factors carefully before making up his mind. On the whole, it is a good thing to __________________, but on the other hand, one must not lose sight into for the advantages.
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