一、转折连词
    
    however, nevertheless, in spite of, at any rate, in any case, whatever
    
    二、时间连词
    
    when, while, as, after, before, since, until, as soon as, once
    
    三、目的连词
    
    that, so that, in order that, lest, for fear that
    
    四、原因连词
    
    because, since, as, now that……
    
    五、结果连词
    
    so, therefore, thus, hence, accordingly, consequently, as a result
    
    六、让步连词
    
    although, though, even though, even if, nevertheless, despite, in spite of
    
    七、并列连词
    
    and, and also, or, neither……nor, either……or, likewise, similarly, equally, in the same way, that is to say
    
    八、递进连词
    
    then, besides, additionally, furthermore, moreover, in addition, what is more