I don't think Jim saw me; he__ into space?可是为什么just staring前面要加助动词was啊
问题描述：
I don't think Jim saw me; he__ into space?可是为什么just staring前面要加助动词was啊
I don't think Jim saw me; he__ into space
A,just stared B.was just staring
答案是选B,可是为什么just staring前面要加助动词was啊?
答
was 和 staring 一起构成【过去进行时】, 说明由于他当时在凝视太空, 所以认为他（吉姆）没有“看见”我
过去进行时： was/ were + v-ing
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