did you understand 和 do you understand 的用法区别

did you understand 和 do you understand 的用法区别 do you understand?的回答 do you understand的意思 are you understand 还是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 Do you understand 和Are you understand 哪种问句是对的?原因是什么? Do you understand?的中文叫什么