Aside from the foregoing two provisos，however，I fundamentally disagree with the speaker's claim。Assuming common ground between two rational and reasonable opponents willing to debate on intellectual merits，both opponents stand to gain much from that debate。Indeed it is primarily through such debate that human knowledge advances，whether at the personal，community，or global level。
从此段开始展开第一段的观点。要学习的是一些句型：Aside from the foregoing two provisos，…however，I fundamentally disagree with…; Indeed it is primarily through…that…。
At the personal level，by listening to their parents‘ rationale for their seemingly oppressive rules and policies teenagers can learn how certain behaviors naturally carry certain undesirable consequences。At the same time，by listening to their teenagers concerns about autonomy and about peer pressures parents can learn the valuable lesson that effective parenting and control are two different things。At the community level，through dispassionate dialogue an environmental activist can come to understand the legitimate economic concerns of those whose jobs depend on the continued profitable operation of a factory。Conversely，the latter might stand to learn much about the potential public health price to be paid by ensuring job growth and a low unemployment rate。Finally，at the global level，two nations with opposing political or economic interests can reach mutually beneficial agreements by striving to understand the other's legitimate concerns for its national security，its political sovereignty，the 3 stability of its economy and currency，and so forth。
此段可谓重点段，所以作者花了重墨称述观点，分别从3个层次论述了disagreement的好处。注意它好就好在能从personal，community，global levels较全面地论述，这是最讨ets欢心的哦!而且他用了比较多的复扎句，也是拿分的重头戏。
In sum，unless two opponents in a debate are each willing to play on the same field and by the same rules，I concede that disagreement can impede learning。Otherwise，reasoned discourse and debate between people with opposing viewpoints is the very foundation upon which human knowledge advances。Accordingly，on balance the speaker is fundamentally correct。收尾了!In sum…Unless…，I concede that…Otherwise…upon which…
Accordingly…fundamentally correct。结尾虽仓促，但在如此短的时间内写成这样，算不错啦!起码4。5分!!!