At the beginning of class,the noise of desks _______ could be heard outside the classroom.A.opened and closed B.to be opened and closed C.being opened and closed D.to open and close这题选什么?为什么

来源：学生作业帮助网编辑：作业帮时间：2024/06/25 00:01:43

At the beginning of class,the noise of desks _______ could be heard outside the classroom.
A.opened and closed B.to be opened and closed
C.being opened and closed D.to open and close
这题选什么?为什么

c.对么?
首先是被动嘛、、At the beginning of class是上课的开始那个点嘛、、、就是ing形式的咯~being咯

应该选A吧，排除法，既然已经be heard了，说明动作已经发生了，所以BD表将来的就可以忽略掉了，C表示正在进行，open跟close都是瞬间动词，用进行时不合适...A项是过去分词表被动来修饰desks，ok?答案是C，我老师这样告诉我：因为open 和 close 是瞬间动词，后面谓语是：could be heard 被听见瞬间动词只有在进行的状态，才会被听见的，所以这时候：除了被...

全部展开

应该选A吧，排除法，既然已经be heard了，说明动作已经发生了，所以BD表将来的就可以忽略掉了，C表示正在进行，open跟close都是瞬间动词，用进行时不合适...A项是过去分词表被动来修饰desks，ok?

收起

选择A，因为open 和close都是主动表示被动。
比如我们通常说，The bookshop always opend at 8:00am.and opend at 9:00 pm.

我觉得选c啊

A 还真说不上为什么

选A
opened and closed 是做, the noise of desks 后置定语解释说明桌子开关发出的噪音，而桌子肯定是被人开或关，就应该用-ed形式表被动

at the beginning of 造句 at the beginning of 是什么意思? at the beginning of还是 in the beginning of at the beginning of the year造句, 英语翻译首先用at the beginning of``` 英语翻译 at the beginning of at the beginning of this love . at the beginning of this love at the beginning和in the beginning根本区别,at.后面一定加of吗 how did the writer feel at the beginning of the 请问in the beginning of 与at the beginning of 的区别 at the beginning of.的中文意思还有the beginning of...的中文意思 At the beginning of the year number 是什么意思 at the beginning of the month是什么时态时间状语 at the beginning of the han dynasty怎么翻译 at the beginning of the last century怎么翻译 at the beginning of the stay的中文意思 at the beginning是什么意思?