因果关系关联词：because；because of this；being that；another important factor／reason of...； since； as； for； in that...； owing to； due to； for the reason that...； in view of； the reason seems to be obvious; there are about...；for this reason; as a result of this； therefore；...and so...； consequently；as a result； thus； hence； so；so that...； in consequence； as a consequence； accordingly; inevitably; under these conditions; thereupon.
上面的东东不存在常用不常用,等你英语达到大神级别的时候,你会发现上面的每一个都很常用~
