关于 be 注意这个句子At the beginning of class,the noise of desks bei

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/07/04 21:31:15

关于 be
注意这个句子
At the beginning of class,the noise of desks being opened and closed could be heard outside the classroom.
关于句子成分分析我还是懂一点的（也请高手帮我分析一下这个句子）,就是不知道这个be(在heard前面的那个）怎么理解怎么用.
希望得到详细的回答

heard之前的be 是作为被动来用的
把这个句子简化后就变成了：The noise could be heard (outside of the classroom).意思就是：在教室外面可以听到噪音,也就是在教室外面噪音可以〈被〉听到.
我们可以把这个句子一层一层的剥开
1.At the beginning of class,the noise of desks being opened and closed could be heard outside the classroom.
2.the noise of desks being opened and closed could be heard outside the classroom.
3.the noise of desks could be heard outside the classroom.
4.the noise could be heard outside the classroom.
5.the noise could be heard
希望对你有所帮助^-^

at the beginning of class ,the noise of desks At the beginning of class,the noise of desks _______ could b [-A72] At the beginning of class ,the noise of desks ______ at the beginning of class,the noise of desks__could be heard 英语5道单项选择1.At the bedinning of class,the noise of desks could 非谓语动词 At the beginning of the class,the noise of At the begining of class,the noise of desks___ could be hear The teacher handed _____books at the beginning of the class. 英语翻译1.The noise of desks being opend and closed could be hea at the beginning of 造句是at the beginning of 还是at beginning of at the beginning of还是 in the beginning of