“Theyarewastingresources，forexample，time，energyandmoney.”
上面这句话不错，只是转折词“forexample”不妥当；应该这样：
“Theyarewastingresources.Forexample，theyusetoomuchtime，energyandmoney.”
不然就要换一换转折词，改用“suchas”或“like”：
“Theyarewastingresources，suchas（orlike）time，energyandmoney.”
不管任何语言，转折词（transitionalwords）都扮演着一个重要角色，就是：承先启后，使句子紧凑，段落相吸，对文章结构，有良性作用。
但是有些人几乎没有采用转折词的习惯，结果文句松散，上下文七零八乱，应该避免。
Again，also，then，besides，further，furthermore，moreover，next，inaddition等，如：
①Jasonteachesdiligently.Besides，hewritesalot.
②Englishisausefullanguage.Foronething，itisanofficiallanguageintheUN.Then，itiswidelyusedinbusiness，scienceandtechnology.
But，however，still，yet，afterall，forallthat，inspiteof，onthecontrary，ontheotherhand等，如：
③Jimisintelligentbutlazy.
④Singaporeisnotabigcountry.Onthecontrary，itisverysmall.
Therefore，so，hence，thus，accordingly，consequently，asaresult等，如：
⑤Somepeopleareover-ambitious.Asaresult，theyareusuallyunhappy.
⑥Tomdidnotworkhard；hence，hefailed.
Likewise，similarly，inalikemanner等，如：
⑦Youcannotwriteswithoutapen.Likewise，youcannotcookwithoutrice.
⑧NooneisallowedtospeakMandarininanEnglishclass.Similarly，nooneisallowedtospeakEnglishinaMandarinclass.
Forexample，inotherwords，forinstance，thatis等，如：
⑨Therearesomecommonerrorsinhiscomposition.Forinstance，itiswrongtouse"he"toreplace"thequeen".
Tosumup，inbrief，inshort，onthewhole，toconclude等，如：
⑩SomesaySingaporeisaniceplacetolivein.Otherssayitisnotsonice.Itistoocompetitive.Inshort，somelikeSingapore；somedonot.
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