whether or not I can participate in it?i这句话对吗?怎么翻译?

whether or not I can participate in it?i这句话对吗?怎么翻译? I'm not sure whether I can complete the work on time.这句话对吗 Whether this is true or not,I can't say. what difference will it （ ) whether I come or not 英语翻译拜托再翻译这句话：I believe it or not,anyway,but I believe I w____ whether it will rain or not tomorrow.怎么填? Whether I should forget him or not.翻译 Believe it or not,I will make it.翻译一下这句话, i have not had it.这句话语法对吗?如何翻译啊? I don't know whether it is true 【or not】.加不加 or not 有什么区别? i don't know whether it will rain or not .but if it __.i sha I can do it myself 这句话对吗