Question

___yesterday,our school organized a successful picnic in the e

．_______ yesterday, our school organized a successful picnic in the countryside, with all the students and teachers taking part in.

A. As a fine day B. It was a fine day

C. It being a fine day D. For it was a fine day

【答案】C
请解释一下，谢谢

Answer 1

这道题目考的是独立主格结构，主句是our school organized a successful picnic in the countryside
It being a fine day yesterday 是时间状语
as we all know,一个句子中只能有一个谓语，对吧
所以要表达 It was a fine day的意思，就必须把was 变成非谓语
所以把was 变成being
懂了吗？
不懂再追问哦！
关于独立主格结构，你可以自己去网上查一下，看看例句，应该就会懂的
望采纳！

Answer 2

解答;
首先，这个句子有主谓宾，所以B是不能选的，
A,D 是同一类，因为昨天天气很好，表因果的关系，有点强加和牵强。
C.是一种对昨天天气的描述，本身是 it is a fine day 然后是非谓语，表一种正在进行的状态。
谢谢