为什么是if I was your boyfriend而不是if I were your boyfriend?按理说虚拟语气应该都是用were,永远都不会出现was .那为什么JB的《Boyfriend》里用的是if I was your boyfriend?

IF I WAS YOUR VAMPIRE关于这首歌的歌名为什么是I WAS而不是I WERE呢? 为什么是if I was your boyfriend而不是if I were your boyfriend?按理说虚拟语气应该都是用were,永远都不会出现was .那为什么JB的《Boyfriend》里用的是if I was your boyfriend? if i were a 为什么if i were a boy?应该是 i was为什么是were 为什么是if i were a boy不是if i was a boy? 为什么是if only I were you 而不是if only i was you If I Was Your Boyfriend 歌词 如果我是你用英语怎么说?为什么是IF I WERE YOU而不是IF I WAS YOU哪? if i were invited tonight ,i would go to the dinner party 为什么用 WERE这句话为什么是IF I WERE而不是 IF I WAS If I were you 中为什么是were而不是am或was 为什么是If I were your father ,而不是I was your father?am的过去式不是was吗?还有，可以帮我讲讲虚拟语气的语法吗？我只知道IF主将从现唉，这应该也是虚拟语气吧？ If I was your vampire,how would you do? “If I were a boy”的谓语为什么是“were”?“am”的过去时不是“was”吗? I是单数,但为什么有If I were you 这样句式虚拟语气我也知道我问的是为什么是I是单数,但为什么有If I were you 这样句式 而不是If i was you if I were in your shoes 和 if i was in your shoes 哪个正确说明理由如题 If I was your vampire 是虚拟语句吗?如果是If I was your vampire中的was为什么不是were 英语交际用语-How wan your journey yo Ottawa?-I managed somehow.The bus broke down halfway为什么是I managed somehowHow was your journey to Ottawa as if i was Your message was sent successfully.//为什么是被动?