4 ---- I have bought an English -Chinese dictionary.---- When and where ___you__ _it?A do buy B did buy C have bought D had bought

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4----IhaveboughtanEnglish-Chinesedictionary.----Whenandwhere___you___it?AdobuyBdidbuyChaveboughtDhad

4 ---- I have bought an English -Chinese dictionary.---- When and where ___you__ _it?A do buy B did buy C have bought D had bought
4 ---- I have bought an English -Chinese dictionary.
---- When and where ___you__ _it?
A do buy B did buy C have bought D had bought

4 ---- I have bought an English -Chinese dictionary.---- When and where ___you__ _it?A do buy B did buy C have bought D had bought
选B
When and where __did_you__buy _it?
上文:我买了一本英汉字典
答:你什么时间在哪买的?对过去的事情进行提问 ,用过去

B did buy
when 相当于一个固定的过去时间状语(类似于yesterday; in 2005),所以必须用一般过去时态。

B 问句用一般过去式

b
过去发生的 所以用did 排除 ac
强调过去的动作 而不是对现在的影响 排除d完成时
选B

B did buy

b

B
翻译为:你什么时间在哪买的它?
形式为:特殊疑问词+一般疑问句
而又因为是过去式,所以用do的过去式:did

did buy

did bought
要注意时态

b