Some social workers _____ after the people in need while others ____ out food t
题型:不详难度:来源:
Some social workers _____ after the people in need while others ____ out food to the local people.A.looked, gave | B.were looking, gave | C.were looking, were giving | D.looked, were giving |
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答案
C |
解析
试题分析:根据语境可知此句的含义是一些社会工作者照顾有需要的人,而其他人提供食物给当地人民群众。此题重点考查的是while引导的状语从句表示当…的时候。其强调的是两个动作同时进行,并且经常用进行时态,故选C。 点评:when,while都有“当……时候”的意思。when既可表示某一点时间,也可以表示某一段时间 。在when引导的时间状语从句中,其谓语动词可以是延续性的,也可以是非延续性的,可与主句中的谓语动词同时发生,也可在其后发生。while只能表示某一段时间,不能表示某一点时间。在while引导的时间状语从句中,其谓语动词只能是延续性的,而且也只能与主句中的谓语动词同时发生或存在。如主句谓语动词表示的是短暂动作,从句时间状语指一段时间,when while 可通用。 while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态。 while 和 when在过去进行时中的用法:表示两个持续性的动作在过去同时发生用while,when后接一个短暂性的动作。持续性的动作用过去进行时,自然也就是要+ing了,短暂性的动作用一般过去时,所以不+ing.所以是while后的动作+ing,when后的动作一般不+ing |
举一反三
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