请帮我看下这句话中WHILE的用法I have been away from my family and friends in Iran while studying in the United States这句话里的WHILE是引导从句还是做"而,却"讲?为什么主句用完成时,而WHILE后面是短语形式?请给

请帮我看下这句话中WHILE的用法I have been away from my family and friends in Iran while studying in the United States这句话里的WHILE是引导从句还是做而,却讲?为什么主句用完成时,而WHILE后面是短语形式?请给 I want a girlfriend and make love with him everyday 这句话的用法对吗?请帮我看看~不知道是不是该用him英文不太好 I have bought that house from which I can enjoy the beautiful scene of Yangpu Bridge.请帮我解释一下from which在这句话中的用法?还有which前加介词的用法. 请帮我看下这句话中on的语法成分和词性.I go to sleep with my bedroom light on. 请帮我用法语和英语翻译一下这句话.“给我你的心脏和血液 ” 请帮我解释一下德语中第三格和第四格的用法 请老师们帮我分析一下初中英语中of和for的用法. 状语从句中While的用法 while 的用法,及其句子中时态. I lived in it请帮我翻一下,再帮我分析下这句话的语法 I'm not what used to 帮我翻译这句话、英语不好的请绕道. While和But表转折的用法区别while和but在句子中,表转折时,用法有什么区别?请指教, while as when just as all morning的用法i was saying that you want to do这句话对不对 英语翻译While I'm still,while I still love.Say all you have to say,no matter what the outcome -请帮我翻译这个句子要通顺不要随随便便的! 请帮我找一些关于英语单词 want 的用法, 请帮我翻译烫发水的用法, 请帮我找出这句话的主句和从句!最近看语法的时候越看倒越糊涂了似的,连主句和从句有时候都分不清楚了.是不是带有引导从句的连词的部分就是从句部分?比如:I hurt my leftshoulder while i was doi Because I'm the best there is at what I do.请帮我讲解一下这句话的结构,