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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Nowaday, there i awidepread concern over (the iue that)_________________. In fact, there areboth advantage and diadvantage in X. Generally peaking, it i widelybelieved there are everal poitive apect a follow. Firtly,_________________________. And econdly _________________________。
Jut A a popular ayinggoe, "every coin ha two ide", X i no exception, and in anotherword, it till ha negative apect. To begin with, _____________________. Inaddition, ______________________________。
To um up, we hould tryto bring the advantage of X into full play, and reduce the diadvantage tothe minimum at the ame time. In that cae, we will definitely make a betterue of the X。
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X now play uch animportant part in o many people’ live that _____________________. Obviouly,X ha both advantage and diadvantage。
A i often pointed outthat, X make u know ________________ o that __________________. In addition,_________________________. Yet here again, there i a danger. The main problemwith it i that _______________________________. It i criticized on theground that it contribute to ______________________. Beide, _________________________。WWw.hAOZUowEn.com
In any cae, whether theultimate of X i good or not, one thing i certain that __________________. Iti the ue to which it i put that determine it value to ociety。
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X ha many advantage. Inthe firt place, ____________________________. Second,___________________________. Third, ____________________________. For all theeadvantage, it i really worthwhile to _________________________________。
However, jut aeverything ha two ide, there are ome diadvantage in _______________. Themot eriou problem i ________________________. Beide,__________________________。
Therefore,given an opportunity to ______________________, one mut conider both ide offactor carefully before making up hi mind. On the whole, it i a good thingto __________________, but on the other hand, one mut not loe ight into forthe advantage。