表明自己观点的信号词：
　　论点：认为，相信： argue , argument , believe , suppose, think , be convinced that [相信] , hold the belief that … , have a notion that …, view…as , regard….as , see…as, consider….to be, reckon [算作，设想],
　　论据: for example , for instance , specifically, take… as an example
　　like , such as … , Imagine …. ,
　　调查研究：investigation , inquiry [hold an inquiry into a case对一个案子进行调查]
　　research, study, survey, report , questionnaire[调查问卷]，measurement ,
　　调查研究结果：
　　得出结论： conclude that … ，come to a conclusion that …. , draw a conclusion that …
　　表明，发现： show , suggest , demonstrate , manifest [清楚地显示或表示] display,
　　find , find out, discover, reveal , prove
　　indicate, imply,
　　预测： forecast , foretell, foresee, predict
　　表示赞同： agree, appreciate , approve, consent to
　　表示反对： against , disagree, disapprove, dissent , object to , be opposed to
　　表示事实： belief , fact , reality, truth
　　表示理论，设想：assumption , theory, hypothesis [假设]
　　表示目的： to do, aim at, for the sake of , for , serve as, in favor of [有利于],
　　for the purpose of, intend to do.

论句之中常用到的信号词：
　　expert , specialist , professor , associate professor [副教授]， sociologist [社会学家]
　　economist, linguist[语言学家]，consultant [顾问] psychologist [心理学家]，behaviorist [行为学家]，
　　philosopher[哲学家] , anthropologist [人类学家]，archaeologist [考古学家]
　　逻辑信号词-路标词
　　1，表示因果的
　　原因：后接句子 --- Because, since , as , for
　　后接词组 --- because of , thanks to , owing to , due to , as a result of ,
　　by/in virtue of [由于]
　　* The movie touched me by virtue of its story.
　　结果： so(that), accordingly[因此]; as a result; consequently; for this
　　(that)reason; hence; therefore
　　此外：表因果的特色词汇
　　比如A 是因，B是果：
　　A account for / be responsible for 　B
　　A　cause / lead to / result in / bring about / bring on / trigger /give rise to 　B
　　2，表示转折的
　　“但是，然而”：but , however; yet , nevertheless, whereas
　　“尽管，虽然”：后接句子 --- although , though, even though , while ,# notwithstanding
　　后接词组 --- despite; in spite of
　　“相反地”： conversely[相反地] ; on the contrary;
　　“另一方面”： on the other hand;
　　3，表示比较的
　　by comparison ; in contrast (相比之下); in the same way; similarly
　　4，表示递进的
　　also; besides; furthermore; in addition; in particular(特别地)more importantly; moreover; What’s more
　　5，表示概括的
　　in brief; in conclusion; in short; in a word , in sum; to sum up; on the whole , to conclude
　　6.表示并列：
　　and , or , at the same time, meanwhile , as well as