Well, do you think people can tell you their real thoughts just through phone? Without person-to-person contact , it is unlikely for you to dig deep into their minds and unlikely to get truth.
因为大部分情况下，英文是首句中心句，段落其他部分是支持中心句的内容，所以听到首句就是主要意思，因此这种模式相对简单，但是考生也要能听出表示观点的词，比如赞成(support, be for …,go for… be on the side of…, quite agree with…) ，中立(mutual , just so so, you can try it, not the best)，反对( not good, be against…, not recommend…, better avoid …)，喜欢(be favor of, like, prefer)，一般态度(it’s ok, but…) ，不喜欢(dislike)，必须( must, it is necessary…)，依情况而定( it depends)，没必要( not necessary)，等等。
Well, I don’t think you should start with the case study too early unless you have made full preparation or you might find you can’t meet the deadline . However, it really is the best approach you can try to get people’s response though it is somewhat time-consuming. If you think you can spare your study time, just go for it.
由于第一句话出现don’t think ，所以很多考生会潜意识将主体判为否定的观点。然而，转折词However 出现以后，要特别小心，因为意思上会有大的转变，这里的it really is the best approach 就是很大的一个转折， 说明发言的人是持支持的态度的。此外，最后一句话是总结性的观点，一句just go for it 非常清楚地再次表示其支持观点。
Another hazard for your back are the shock waves which travel up your spine when you walk, known as heel strike . A real find for our patients has been the shock-absorbing shoe insert. A cheap but very effective solution.——支持
Finally, a word about the state-of-the-art relief- the TENS machine-a small battery-powered gadget which delivers subliminal electrical pulses to the skin. Our experience indicates that your money is better spent on the more old-fashioned remedies.——反对
It can be useful to get special orthopaedic chairs, but remember the most important improvement should be in OUR posture.——中立
Though absolutely flat shoes can be a solution for some, others find their posture suffers——中立
间接观点表达：
Through observation study, you can just watch and take notes. And you can get some unforeseeable results from people’s behavior, but it can only cover certain aspects. Therefore, you need other research method to assist it. But you can try if you want.——中立
Well, I think questionnaires are very good at telling you how people fill in questionnaires, but they tell you very little else. So better avoid it.——反对
Face-to-face interview can help you get people’s facial expressions and body language, through which you can identify what they genuinely have in mind. But it depends sometimes. Not everyone is willing to open his or her mind to you. ——中立