Are you understand正确还是Do you understand正确?

Are you understand正确还是Do you understand正确? are you understand 还是do you understand 是are youunderstand?还是do you understand? 问别人懂吗是要用Do you understand还是Are you understand?这是why?please t You are bit3h- do you understand can you understand?和do you understand?还有are you understand?有 do you understand答语 Do you understand是什么意思? Do you understand Do you understand? you do not understand Are you understand