精英家教网 > 初中英语 > 题目详情
____ they ____ a cow yesterday?
A.Did; milkedB.Did; milkC.Do; milkedD.Do; milk
B

试题分析:句意:昨天他们给奶牛挤奶了吗?结合语境可知本句描述的是过去的动作,故用一般过去时态,一般过去时态疑问句中一般用助动词体现时态,行为动词用原形,故选B。
点评:英语中的时态主要是借助于时间状语与上下文语境来进行判断。解答此类题型,首先要注意句子中的时间状语,如果没有则要通过分析上下文,结合语境来判断句子的时态。英语疑问句中一般具有时态上的对应关系,注意结合这一特点进行区分。
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