例如：The fact that the general literature on interviewing does not deal with the joumalistic interview seems to be surprising for two reasons;first，it seems likely that most people in modem Western societies are more familiar，at least in a positive manner, with journalistic interviewing than any other form of interviewing. (that从句只是解释fact，it从句列举reasons，只要抓住The fact seems to be surprising for two reasons，这句话的意思就可以把握了。)
To sum up，Aristotle thought that all motions resulted either from the nature of the moving object or from a sustained push or pull.(表明作者要做结论)
There is never only a single force in a situation.For example, in walking across the floor，we push against the floor, and the floor in turn pushes against us.(举例说明)
In other words, in an economic sense the family was analmost self—sufficient unit.(用不同的表达方法说明同一观点)
常用的主要有：
A.表示递进关系
如：also，besides，further，furthermore，even，too，moreover.in addition，in particular，even more important等。
B.表示时间和顺序
如：before，now，next，first，finally，at first，at last，then，until，soon，later，after，eventually，in the past，afterwards，meanwhile。in the meantime等。
如：because，thus，so，so that，as a result，therefore，consequently, for this(that)reason，hence，accordingly等。
F.表示比较或对比(下文要开始转折)
如：(un)like，similarly，likewise，in the same way，in spite of，despite，on the contrary，by comparison，in contrast，but，however，although，on the other hand，yet，nevertheless，conversely，otherwise等。
G.表示结论和概括意义
如：to conclude，to sum up，in .In short，in brief，on the whole等。
.In short，in brief，on the whole等。
