Chengdu Metro Line 1,______ into use in October 2010,has made the traffic in this city not so busy.A.to be put B.be put C.having put D.put为什么不选B?被投入使用

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Chengdu Metro Line 1,______ into use in October 2010,has made the traffic in this city not so busy.
A.to be put B.be put C.having put D.put
为什么不选B?被投入使用

首先,分析题干,两个逗号之间的东西起说明作用,此处修饰Chengdu Metro Line 1；
其次,分析选项,由于has made 已经做了谓语,如果没有从句,一句话不会出现两个谓语,B选项应该首先排除；
再次,从语态和时态分析,语态应该是Line被使用,可以排除C,从时态是Oct. 2010当然是过去时,排除A to be put.
此类选择题做法都如上,从语态时态一起判断
此类选择可以从选项中观察出在考时态语态

put into use in October 2010作为插入语修饰Chengdu Metro Line ，插入语中不能出现谓语动词，只能出现分词形式（现分/过分）或不定式。
October 2010是过去时间，不能用表达将来的不定式，且Chengdu Metro Line 与put是动宾关系，只能使用过去分词。但是句意为地铁一号被投入使用,为什么不加be动词呢?...

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put into use in October 2010作为插入语修饰Chengdu Metro Line ，插入语中不能出现谓语动词，只能出现分词形式（现分/过分）或不定式。
October 2010是过去时间，不能用表达将来的不定式，且Chengdu Metro Line 与put是动宾关系，只能使用过去分词。

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D
此题考查非谓语动词的用法，D选项为put的过去分词，表被动完成

Chengdu Metro Line 1,______ into use in October 2010,has made the traffic in this city not so busy.A.to be put B.be put C.having put D.put为什么不选B?被投入使用 METRO LINE 9怎么样 metro 翻译:You can take Metro Line 2 and transfer to Metro Line 7 at Jing'an Temple.中译英,如题. metro-stadium metro是什么意思 METRO怎么样 英语翻译翻译这句话：Transportation wise,it's easy to get to either walking of via the metro line which is a few blocks away. Line 3 of the Nanjing metro will be in use in2014A.how excited the news isB.what an excited news选哪个, phase在一句话中的意思The five new subway lines - Fangshan Line,Changping Line,the first phase of the No 15 Line,Yizhuang Line and Daxing Line - have a combined length of 108 kilometers,bringing the city's total metro length to 336 km and the 英语翻译Metro Signaling and Modern Railway Signaling Signaling used on high density metro (or subway) routes is based on the same principles as main line signaling.The line is divided into blocks and each block is protected by a signal but,for me line 1 without def line line line LINE metro的意思 metro有哪些好处?