can you understand?和do you understand?还有are you understand?有什么区别 应该哪个是正确问法?

Can you understand me Can you understand?I Can you understand?I can you understand?和do you understand?还有are you understand?有什么区别 应该哪个是正确问法? Can you understand me?Sorrt,I can hardly understand you. 请问I can understand you , You can't understand me? When you can understand me? Can you understand them?意思 I can not understand you. can you understand astronauts' jokes still love you .can you understand 3 I love only you can understand So you can understand English?怎么翻译 I hope you can understand是什么意思? How can I make you understand? I hope you can understand my Can you understand the( )meaning in his words?(hide)动词填空.我需要答案和解释.