6) 比较关系： similarly; in like manner, in comparison with；when compared with；compared with；when in fact...; like...； likewise； similarly important； apart from (doing)...； ... rather than...，by doing so ；bothand...; in the same way; not only...but (also).
7) 对照(不同点)：yet; still; for all of that; notwithstanding; rather; neither ... nor; although; though; but; however; something is just the other way around；yet; conversely； unlike； opposed to; as opposed to ； in contrast (to)； by way of；on the contrary；different from this；as opposed to this； nevertheless; contrary to； whereas； while；but on the other hand.
8) 举例关系:for example； for instance； in this case; namely； as you know； you may as／say； as he explains； like； such as； a case in point is...; consider...； in particular；including...；for one thing...，for another...；put it simply；stated roughly； as an illustration， I will say...； a good example (of...)would be...；to detail this，I would like to...； It is interesting to note that...；in this situation; as proof; take the case of; take as example (something)； as for; as regards； as to； according to; on this occasion.
9) 强调关系：in fact; especially；particularly；moreover；naturally; what is more important； in reality； certainly; of course; indeed; in particular；not to mention...；believe it or not；undeniably; other thing being equal；it is certain／sure that...；to be strict; to be true；by definition; definitely; undoubtedly; without a doubt; in truth, in any event(不论怎样); without reservation(毫无保留地); obviously, not only.. but(also...), both... and...