Excuse me.Are you come from the USA?这个句子哪里错了

Excuse me.Are you come from the USA?这个句子哪里错了 A:you from the USA?B:No,i come Canada.are you from? where is Lily come from?这个句子哪里错了? Excuse me ,is that train to Beijing 这个句子哪里错了?怎么改? what--------are you?I come from the USA A、nationality B、stat Are you from the USA 肯定回答 英语句子：Excuse me,are you Mark?') He ask me ,"Are you from the USA"改为间接引语·· They come from USA.这句话哪里错了,改正过来 Excuse me,are you from the ___(西部的) part of China? Excuse me ,is that train to Beijing 这个句子哪里错了?怎么改?要完整的句子 Do you come from the USA?改为同义句