aim at China has carried out some new agricultural policies,aiming at raising farmers’ living standards.中国已执行了一些新的农业政策,旨在提高农民生活水平.aiming at raising .这个分词短语在句中做什么成分?为什

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aimatChinahascarriedoutsomenewagriculturalpolicies,aimingatraisingfarmers’livingstandards.中国已执行了一些新的

aim at China has carried out some new agricultural policies,aiming at raising farmers’ living standards.中国已执行了一些新的农业政策,旨在提高农民生活水平.aiming at raising .这个分词短语在句中做什么成分?为什
aim at
China has carried out some new agricultural policies,aiming at raising farmers’ living standards.中国已执行了一些新的农业政策,旨在提高农民生活水平.
aiming at raising .这个分词短语在句中做什么成分?
为什么不用aimed at
China has long been a leader in the field of genetic research aimed at improving agriculture.
这里为什么不用aiming?

aim at China has carried out some new agricultural policies,aiming at raising farmers’ living standards.中国已执行了一些新的农业政策,旨在提高农民生活水平.aiming at raising .这个分词短语在句中做什么成分?为什
赞同xxtygyb的,
第一句,aiming at以现在分词形式,修饰前面整个句子.中国已执行了一些新的农业政策,（这个动作）旨在提高农民生活水平.
如果这里改成China has carried out some new agricultural policies aimed at raising farmers’ living standards.这样的话,便是过去分词修饰polocies了,中国已执行了一些新的农业政策,（这个政策）旨在提高农民生活水平.也不是不能用,只是意思变了.
第二句,aimed at,aimed 以过去分词形式,修饰前面一个词.China has long been a leader in the field of genetic research aimed at improving agriculture.这句话的意思是中国在遗传研究领域已经是个佼佼者,这个研究旨在改善农业,如果用aiming at那么便是修饰China has long been a leader in the field of genetic research 整句话,这是讲不通的.

aiming 以现在分词形式， 是针对前面整个一段话而言的，也就是去修饰前面整个句子。
aimed 以过去分词形式，是针对前面一个名词（field of genetic research）而言的，修饰前面一个词。
GMAT里面的小case

第一个是伴随状语,第二个是后置定语

aim 是不及物动词不能直接接宾语
aim at 以……为目标

aim at aim at China has carried out some new agricultural policies,aiming at raising farmers’ living standards.中国已执行了一些新的农业政策,旨在提高农民生活水平.aiming at raising .这个分词短语在句中做什么成分?为什 aim to 与aim at 的区别是什么?是aim to ,aim for ,aim at 三个 aim at 的用法 aim at是什么意思啊? AIM AT A SUCCESS aim sth at sb aim and aim at的区别? aim to、aim at、aim for有什么区别 The goverment has taken some measures .aming at cutting down the cost为什么不是to aim aim at...用法及造句 aim后为什么加at aim to和aim at的共同点,和区别! Aim at ,be aimed at的区别 ..xxx school located in the east of china .she was set up in 1900.XXX school has beautiful view.a lot of excellent teachers and students .she is such a good school that almost all the students want to study in.it's aim is to make us not only good at ____ to break the 574.8km/hour speed record set by France, China has agreement with Thailand tobuild high-speed railways.A. Aiming B. To aim ____ to break the 574.8km/hour speed record set by France,China has agreement with Thailand tobuild high-speed railways.A.Aiming B.To aim Aim