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　“they are wasting resources, for example, time, energy and money.”
　　上面這句話不錯(cuò)，只是轉(zhuǎn)折詞“for example”不妥當(dāng)；應(yīng)該這樣：
　　“they are wasting resources. for example, they use too much time, energy and money.”
　　不然就要換一換轉(zhuǎn)折詞，改用“such as”或“l(fā)ike”：
　　“they are wasting resources, such as (or like) time, energy and money.”
　　不管任何語(yǔ)言，轉(zhuǎn)折詞（transitional words）都扮演著一個(gè)重要角色，就是：承先啟后，使句子緊湊，段落相吸，對(duì)文章結(jié)構(gòu)，有良性作用。但是有些人幾乎沒(méi)有采用轉(zhuǎn)折詞的習(xí)慣，結(jié)果文句松散，上下文七零八亂，應(yīng)該避免。
　　現(xiàn)在把主要轉(zhuǎn)折詞，分類列下，供大家參考。
　�、癖硎尽坝扔羞M(jìn)者”的意思：
　　again, also, then, besides, further, furthermore, moreover, next, in addition等，如：
　�、� jason teaches diligently. besides, he writes a lot.
　�、� english is a useful language. for one thing, it is an official language in the un. then, it is widely used in business, science and technology.
　�、虮硎尽胺匆庖�(jiàn)”：
　　but, however, still, yet, after all, for all that, in spite of, on the contrary, on the other hand等，如：
　�、� jim is intelligent but lazy.
　�、� singapore is not a big country.on the contrary, it is very small.
　　Ⅲ表示“困果關(guān)系”：
　　therefore, so, hence, thus, accordingly, consequently, as a result 等，如：
　�、� some people are over-ambitious. as a result, they are usually unhappy.
　�、� tom did not work hard; hence, he failed.
　�、舯硎尽氨容^關(guān)系”：
　　likewise, similarly, in a like manner 等，如：
　�、� you cannot writes without a pen. likewise, you cannot cook without rice.
　　⑧ no one is allowed to speak mandarin in an english class. similarly, no one is allowed to speak english in a mandarin class.
　�、醣硎尽芭e例示范”：
　　for example, in other words, for instance, that is 等，如：
　�、� there are some common errors in his composition. for instance, it is wrong to use "he" to replace "the queen".
　�、霰硎尽敖Y(jié)束”：
　　to sum up, in brief, in short, on the whole, to conclude 等，如：
　　⑩ some say singapore is a nice place to live in. others say it is not so nice. it is too competitive. in short, some like singapore; some do not.

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