You must turn off your cell phone when you take a plane.改为否定形式的同义句You ....your cell phone when you take a plane.为什么

分类: 作业答案 • 2021-12-20 03:39:35

问题描述：

You must turn off your cell phone when you take a plane.改为否定形式的同义句
You ....your cell phone when you take a plane.为什么

答

保证答案准确率：= You (need not turn off) your cell phone when you take a plane.must解释为“必须”时,其否定形式一般为needn't,意思是“不必”.mustn't的意思是“禁止,不许”,不符合句意.如果对你有所帮助,请...