he is coming back from england 为什么用进行时

he is coming back from england 为什么用进行时 _____ is he coming back from the airport? He is from England My father is coming back from England in about a month. he is coming back s___ Jack is from England.He is E------- He is not coming back any more. Is he from England?(改为同义句) he is from England,同义句 He is from England.句子成分分析 He is from England(对England提问） She is coming back in two days中为什么要用coming.