完形填空中常见逻辑连接词
并列关系：and, or
转折关系：but, however, nevertheless, whereas, while
让步关系：although, though, despite, in spite of
因果关系：due to, owing to, thanks to, because of, because, since, as, for, so, therefore, thus, as a result
条件关系：if, whether, unless, provided that, providing that, suppose that, supposing that
解释关系：i.e., for example, for instance, in other words, that is to say
顺序关系：before, after, first, second, then, next, finally
附录1：引导状语从句的连接词
1、时间状语从句:When(当……的时候), while(当……的时候)，whenever（每当）, as （当……时）, since（自从）, until（直到）, till（直到）, before（在……前）, after(在……后), as soon as, the moment, immediately, the day, no sooner…than,
hardly/scarcely…when, the instant, instantly , directly, the minute, the second, （一……就）every time（每当）, by the time（等到……的时候）, once（一旦）
2、原因状语从句:Because（因为），since（既然，由于），as（因为），now that(既然)，seeing that（既然），considering that（考虑到，因为），in that（因为），in view of（鉴于）
3、条件转语从句:If（如果），unless(除非，如果不), providing(假如), so long as(只要), on condition that(条件是), suppose that(假如), in case(如果), only if(只要), if only(但愿，要是……就好了)
4、让步状语从句:Thought(虽然), although(虽然), even if(即使), as(尽管), while(尽管),whatever(无论什么), wherever(无论哪里), whoever(无论谁), however(无论怎样), no matter(不论，不管), for all that (尽管), granted that(即使), in spite of (尽管), despite(不管)
5、目的状语从句:In order that, so that(为了，以便)；lest，in case（以防，以免）
6、结果状语从句:So that, so……that, such……that, to such a degree(如此……以致于；结果)。