课堂上强调了很多的涵义发生180度转弯的BUT转折题，要学会听BUT,还有yet, however, though, whereas, unfortunately,unexpectedly, instead, rather than, other than, to be frank,frankly speaking, to tell you the truth,etc.
就是因为所以不但而且这一类的词，表原因的because, becauseof, for, as, due to, owing to, in that, now that, according to, 表结果的therefor, so, as a result,consequently, eventually, 表递进的apart from, in addition, furthermore, what's more,moreover,etc.
形容词和副词的较高*永远是较需要关注的，most importantly, the most popular... the biggestof...
在这些词汇后就是关键和重要的事实性息，actually, in fact, as a matter of fact,etc.
后面较重要的是the first, firstly and finally.
sb.has got to, can , could, may, might, need,should, ought to,etc.
表示重要的词，important, crucial, chief,major,significant, the only, unique, essential, necessary,vital, etc.