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triiawypm

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[求助] 求助个Than前后一致的问题 已有1人参与

近来写文章被这个搞晕了,than前后比较的东西应该是对等的,但看文献里面有一些than后面用了does,有一些没有,谁能给我讲解一下,谢谢了。投文章审稿人说我的英语需要找人润色一下。

下面是文献里面摘的一些例句:

These catalysts exhibit increased thermal stability and produce higher molecular weight polymers than conventional metallocene catalysts

18-ZrCl/MAO produces polyethylene with a higher molecular weight than 18-ZrMe/B2

ethylene-bridged catalyst 19-ZrMe is more active than methylene-bridged catalyst 18-ZrMe

18-TiMe/B2 and 19-TiMe/B2 exhibit∼65X and∼35X greater polymerization activity, respectively, than does the monometallic catalyst 20-TiMe/B1

catalyst 19-TiMe enchains 15.4% more styrene than does 20-TiMe/B1.

calculated reactivity ratios indicate that binuclear catalyst 19-TiMe/B2 favors styrene insertion more than does catalyst 20-TiMe/B1

Single-component Ni(II) catalyst 33 (Chart 17),86 based on a 3,30-bisalicylaldimine ligand, yields polyethylene with lower activity than the mononuclear Ni(II) Grubbs’ catalyst
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agar

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【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★
慕亦凝: 回帖置顶 2015-10-08 20:39:45
triiawypm(慕亦凝代发): 金币+10, 谢谢应助,外语版有你更精彩 2015-10-08 20:40:22
These catalysts exhibit increased thermal stability and produce higher molecular weight polymers than conventional metallocene catalysts(后面跟的句子结构 “exhibit。。。。。。”因为重复省略)

18-ZrCl/MAO produces polyethylene with a higher molecular weight than 18-ZrMe/B2 (后面跟的句子结构 “produces ......同上,省略)

ethylene-bridged catalyst 19-ZrMe is more active than methylene-bridged catalyst 18-ZrMe  后面跟的句子结构 “is..........."同上,省略)

18-TiMe/B2 and 19-TiMe/B2 exhibit∼65X and∼35X greater polymerization activity, respectively, than does the monometallic catalyst 20-TiMe/B1 (does 代表前面的 “exhibit”,省略后句子结构倒装)

catalyst 19-TiMe enchains 15.4% more styrene than does 20-TiMe/B1. (does 代表前面的 “enchains”,省略后句子结构倒装)

calculated reactivity ratios indicate that binuclear catalyst 19-TiMe/B2 favors styrene insertion more than does catalyst 20-TiMe/B1 (does 代表 “favors”,省略后句子结构倒装)

Single-component Ni(II) catalyst 33 (Chart 17),86 based on a 3,30-bisalicylaldimine ligand, yields polyethylene with lower activity than the mononuclear Ni(II) Grubbs’ catalyst (后面跟的句子结构 “yields。。。。。。”因为重复省略)
4楼2015-10-07 21:58:02
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triiawypm

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还请大家帮帮忙啊
2楼2015-10-07 20:17:15
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hk20012002

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3楼2015-10-07 21:05:37
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triiawypm

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引用回帖:
4楼: Originally posted by agar at 2015-10-07 21:58:02
These catalysts exhibit increased thermal stability and produce higher molecular weight polymers than conventional metallocene catalysts(后面跟的句子结构 “exhibit。。。。。。”因为重复省略)

18- ...

啊,我的问题是为什么有的省略了,有的加了个does,does不可以省略吗?
5楼2015-10-07 22:08:14
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triiawypm

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顶一下。
6楼2015-10-08 08:52:34
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agar

金虫 (著名写手)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
triiawypm: 金币+20, ★★★★★最佳答案, 谢谢 2015-10-15 10:17:03
可以省,可以省,取决于作者认为后面的省略是否清晰,但其实省不省都一样。只要主语有同质性可比性都可以省
7楼2015-10-08 19:52:59
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