whether or not可以完全换成if?

whether or not可以完全换成if? whether与or not在句中不相邻时whether是否可以改为ifIt is a question whether he will come or notwhether 是否可换成if 据说在宾语从句中,whether or not和whether可以互换,语意不变.如：It is uncertain whether he will come (or not).那这两个句子中的whether可以换成whether or not吗?如：I want to know whether girls are valued as much as boys. 英语主语从句问题It hasn't been decided whether he'll come or not.想问可以把whether换成when吗!为什么? whether ..or not... whether or not 为什么if后面不能or not,whether可以 whether or not 与whether的区别 WHETHER OR NOT COMBNED是什么意思 whether or not连接的宾语从句,or not可以省略吗?比如I don't know whether he is wise or not. Whether to go there or not hasn’t been decided.如何翻译Whether to go there or not 或 Whether to go there 是否可以单独成为一句话 i can't say whether or not he will come on time..他能否准时来,我说不准.whether or not能换成whether吗,两者有什么区别 It really matters much whether you attend his birthday party or not.开头的It为什么不能换成That 宾语从句的连接词做表语例句=10分1.给举几个情况I don't know whom he is waiiting for?这句是不2.I'm discussing whether or not he will go.可以换成I'm discussing whether he will go or not.举几个情况，有资料更好， whether or not 引导疑问句可以这样说吗?whether or not has the Lotus root been sliced up?有语法错误吗? We shall start off as planned whether he comes or not.为什么从句用一般现在时?可以改为whether coming or not if.or not的意思 whether or not呢? if.or not的意思whether or not呢?