He is leaving the first week in June and staying until September,为什么leaving后不加介词 具体解释一下时间状语和时间状语从句的意思,举几个例子

He is leaving the house 是什么意识 He is leaving the house改成完成时代怎么改? 请问he is leaving the house .与He is having breakfast .用现在完成时怎么表达? They say that he is leaving soon. ____________he is leaving. He does business in shanghai.he is leaving for shanghai the day after tomorrow. He is leaving the first week in June.leaving后为什么没有介词Of June 可以么 The fox is leaving sadly. The bus is leaving soon为什么要用is leaving? He is constantly leaving his things about He is the last person --- (leave) 填 to leave 和 leaving 感觉都行啊 left he loves concert,he is always the first to come and the last to leave.为什么不用coming leaving the teacher is waiting for the students leaving.为什么用leaving而不用to leaving 初二英语书上的一个句子分析英语书上的：He is leaving the first week in June and staying until September.为什么leaving后面没有in? He is always the last one ____ the office.leave 为什么填to leave 为什么不填leaving?He is always the last one ____ the office.leave 为什么填to leave 为什么不填leaving? when he leave 和when he is leaving区别 Tom likes parties .He is always the first_________and the last .to come ;to leave想知道为什么 不能用coming .leaving . He is leaving tomorrow可以改成He will leaving tomorrow么 翻译：The plane is leaving for Shanghai.