一道英语单选Some students sat in the corner chatting,but_ their te

一道英语单选
Some students sat in the corner chatting,but_ their teacher,all _ up.A.saw; standing B.seeing; stood C.saw; stood D.seeing 答案为什么是B?

新兴181067 1年前已收到3个回答举报

fighter0223 春芽

共回答了14个问题采纳率：78.6% 举报

第一个空是动名词作时间状语,表主动关系,相当于(when they saw thier teacher),第二个就是主句的另一部分,用but跟前面的分句并列,所以用过去式

1年前

alllittlethings 幼苗

共回答了6个问题举报

but和and类似，都是连接两个句子，所以和sat保持一致

1年前

晨星月幼苗

共回答了35个问题举报

这个单选有两个空，首先先看第一个，第一个空是填seeing 一个现在分词，在这里是现在分词表示主动，因为是学生们发出的，第二个空是stood s是过去分词，是和前半句那个sat构成时态一致。

1年前

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