英语六级语法精要：连词

　　连词

　　并列连词

　　表示意义的引申: and, bothand, not onlybut, as well as, and as well, neithernor

　　表示选择: or, eitheror

　　表示转折: but, while, whereas, yet, however/nevertheless

　　表示因果: for, so, therefore, hence

　　从属连词

　　表示时间: when, while, as, after, before, since, until, as soon as, once

　　表示原因: because, as, since, now that, seeing that

　　表示条件: if, unless, in case, provided, suppose, as long as, on condition ,

　　表示其他关系: though, than, as/soas, lest, in order that, sothat