on的反义词是什么 turn

反义词是turn off ，中文意思是关掉，关闭拐弯，使转变方向使失去兴趣

The boy had the presence of mind to turn off the gas.那男孩子镇定地关掉了煤气。

"Turn off the TV now!" she shouted.

“现在把电视关掉！”她喊道。

Would you turn off the TV， please?

请把电视关掉，好吗