是否的英语怎么写

应该是if吧..

ifwhetherwhether ... oris or isn't

是否 [词典] whether; if; whether or not; [例句]他问我是否和你一块儿离开的，我说不是。He asked if I had left with you, and I said no

whether or not例如:It ceased to matter whether or not he sold his work. 他是否卖掉了他的作品已无关紧要。if例如：I wonder if she is ill.不知她是否病了。whether例如：His nationality isn't relevant to whether he's a good teacher. 他的国籍与他是否是位好老师无关。I'm uncertain whether to go or not.我不能肯定去还是不去。

是否：whether

你好!是否whether 英[ˈweðə(r)] 美[ˈhwɛðɚ, ˈwɛð-] pron. 其中的哪一个; n. 可能的选择; [例句]To this day, it's unclear whether he shot himself or was murdered至今尚不清楚他究竟是饮弹自杀还是被谋杀。