因果关系:because, in that, for, therefore, thus, accordingly, consequently, hence, given, so…that, so…as to, when…then, as long as, in order to……
转折关系:albeit, but, although, despite, however, in spite of, nevertheless, notwithstanding, while, whatever, regardless, even though, even if, yet……
对比关系:in contrast, on the contrary, far from, on the other hand, rather than, instead of, not…but, paradoxically, ironically, surprisingly, unexpectedly……另外还有时间的不同体现相反的关系等等