1.表示原因
1)There?are?three?reasons?for?this.?
2)The?reasons?for?this?are?as?follows.???
3)The?reason?for?this?is?obvious.?
4)The?reason?for?this?is?not?far?to?seek.???
5)The?reason?for?this?is?that...?
6)We?have?good?reason?to?believe?that...???
例如：?
There?are?three?reasons?for?the?changes?that?have?takenplace?in?our?life.?Firstly，people’s?living?standard?has?been?greatly?improved.?Secondly，most?people?are?well?paid，?and?they?can?afford?what?they?need?or?like.?Last?butnot?least，more?and?more?people?prefer?to?enjoy?modern?life.??
注：如写第一个句子没有把握，可将其改写成两个句子。如：Great?changes?have?taken?place?in?our?life.?There?are?three?reasons?for?this.这样写可以避免套用中的表达失误。???
2.表示好处
1)It?has?the?following?advantages.???
2)It?does?us?a?lot?of?good.???
3)It?benefits?us?quite?a?lot.???
4)It?is?beneficial?to?us.?
5)It?is?of?great?benefit?to?us.?
例如：?
Books?are?like?friends.?They?can?help?us?know?the?world?better，and?they?can?open?our?minds?and?widen?our?horizons.Therefore，reading?extensively?is?of?great?benefit?to?us.?
3.表示坏处
1)It?has?more?disadvantages?than?advantages.?
2)It?does?us?much?harm.???
3)It?is?harmful?to?us.???
例如：?
However，everything?divided?into?two.?Television?can?alsobe?harmful?to?us.?It?can?do?harm?to?our?health?and?make?us
lazy?if?we?spend?too?much?time?watching?television.?
4.表示重要、必要、困难、方便、可能
1)It?is?important(necessary，difficult，convenient，?possible)for?sb.?to?do?sth.?
2)We?think?it?necessary?to?do?sth.?
3)It?plays?an?important?role?in?our?life.?
例如：?
Computers?are?now?being?used?everywhere，whether?in?thegovernment，in?schools?or?in?business.?
Soon，?computers?will?be?found?in?every?home，too.?Wehave?good?reason?to?say?that?computers?are?playing?an?increasingly?important?role?in?our?life?and?we?have?stepped?intothe?Computer?Age.?一、表示递进关系的关键词语
Additionally加之;又
besides此外;除……之外
equallyimportant同样重要的是
furthermore此外;而且
inaddition另外
inotherwords换句话说
lastbutnotleast最后但同样重要的是
moreover而且;此外
thatissay即;就是;换句话说
二、表示转折关系的关键词语
although虽然;尽管
atthesametime同时;但是
despite不管;尽管;不论
evenif即使
eventhough即使
however然而;可是
inspiteof不管
instead代替;而不是
nevertheless然而;不过
onthecontrary正相反
otherwise另外;不同地
regardlessof不管;不顾
still依然;仍然
though虽然;可是
while而
yet然而;但是;仍
三、表示选择关系的关键词语
either…or………或……
insteadof………，而不是……
neither…nor………和……都不……
not…but…不是……而是……
ratherthan…宁可;胜过
whether…ornot是否
四、表示比较关系的关键词语
comparewith/to与……比较
equally相等地;平等地
incomparisonwith与……比较
incontrast相反;大不相同
incontrastto和……对比
inthesameway同样地
instead代替;改为
onthecontrary正相反
while而
五、表示因果关系的关键词语
accordingly因此;从而
asaresultof作为结果
because(of)因为
consequently从而;因此
dueto由于;应归于
hence因此;从此
inthat由于;因为;既然
nowthat因为;既然
onaccountof由于
owingto由于;因……的缘故
so所以
sothat所以
thanksto由于
therefore因此;所以
thus因此
六、用于表示总结的关键词语
aboveall最重要的是
accordingly于是
asaconsequence因此
asaresult结果
ashasbeennoted如前所述
asIhavesaid如我所述
atlast最后
briefly简单扼要地
bydoingso如此
certainly当然地;无疑地
consequently因此
eventually最后
hence因此
inaword总之
inbrief简言之
inconclusion总;最后
inshort简而言之
insummary简要地说
insum总之;简而言之
obviously显然
onthewhole总体来说;整个看来
toconclude总而言之
tospeakfrankly坦白地说
tosumup总而言之
tosummarize总而言之
eventually最后
hence因此
inaword总之
inbrief简言之
inconclusion总;最后
inshort简而言之
insummary简要地说
insum总之;简而言之
obviously显然
onthewhole总体来说;整个看来
toconclude总而言之
tospeakfrankly坦白地说
tosumup总而言之
tosummarize总而言之
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