有兴趣的来看看这道英语题吧！

来源：百度知道 编辑：UC知道 时间：2024/06/08 01:08:31
electrons are known______continuously.
A.to be moving B.moving
请说明原因，谢谢了！

A- to be moving--- 正在动...

B

A

B moving 作原因状语 而to do 不定式作原因状语时只能用语这类句型 I am glad to see you.I am sorry to hear that. They are kind to help him. 表示感情的词后面

B
就跟It is known that electrons move continuously.一个意思.