3.常用于表示先后次序的过渡词语及句子
（1）first，second，third…第一，第二，第三
例：first，she had studied chemistry during her sophomore and junior years.second，she never missed a class.third，she performed every required experiment in all her chemistry courses.fourth，she always worked hard.her classmates were sure that she would win top award in chemistry during her senior year at the university.首先，她在一二年级时就选修了化学课程。其次，她从不误课。再有，她认真完成每一次化学试验。还有，她学习非常刻苦。因而同学们确信她在高年级时会获得学校化学大奖。
（2）to begin with…，moreover…，finally…，首先…，此外…，最后…
例：there are a few reasons for his decision of studying law.to begin with，he is very interested in social affairs and it seems the best way to enable him to engage in these activities.moreover，his father is a lawyer.he has always encouraged him to do something similar.finally，he is sure he can get a job after graduation.他决定学法律有几方面的原因：首先，他对社会事物感兴趣，学习法律有助于他参与这些活动。此外，他父亲是个律师，一直鼓励他从事同样的职业。最后，他确信毕业后能找到工作。
（3）meanwhile同时
例：meanwhile，the better skills and knowledge children possess，the more opportunities they will be ensured.同时，孩子们的技艺与知识掌握得越好，今后的机会就越多。
（4）since then自此之后
例：since then，the olympics turned out to be an instrument of peace and freedom for small nations.自此之后，奥林匹克运动成为小国争取和平和自由的工具。
（5）therefore因而
例：therefore，if this is included in good education that parents are seeking now，their children will be definitely ensured a bright future.因而，如果父母们在其为孩子们寻求的良好教育中加入这一点，他们的子女肯定会有一个光辉灿烂的未来。
4.常用于表示因果关系及分析原因的过渡词语与句子
（1）as a result由于…结果
例：her performance in college was excellent.as a result，she has got a satisfactory job.由于她在大学成绩优异，她找到一份令人满意的工作。
（2）due to由于
例：my trip to guang zhou and shen zhen has to be cancelled due to the financial problem.由于财务问题，我去广州和深圳的旅行取消了。
（3）consequently结果，因此
例：the government was unwilling to risk a conflict with that neibouring country，and consequently，promised to sign the treaty.该国政府不愿冒险与邻国发生冲突，因此答应签署条约。
（4）one may criticise……for……，but the real cause of…lies deeper人们可以因为…批评…，但是…的真正原因在更深层次
例：one may criticise the school authorities for the fire accident，but the real reason of the accident lies deeper.人们可以就火灾事故批评校领导，但事故还有更深的原因。 |
