if和or

if和or if not和whether or的区别 if 和or not可以连用吗 Wether or not和if or not那个句型对. if和and /or 函数的运用?为什么if 有时和and/or 连用?and/or 启什么作用? whether 和if 的区别 .whether ...or not .一句话 if可以跟or 可以用if.or if or not和weather or notShe tells me __my pictures are good or not.请问应填if 还是weather?为什么?打错了，是whether 此句IF和WHETHER可替换吗I asked her if she wanted tea or coffee or ice-cream.if的位置可以用whether吗 if能不能与or连用 if rs.eof or rs.bof then 和if rs.eof and rs.bof 它们一样不? He is very young.Iam not sure ____he can finish the work alone or not.A .how B .that C .whether D .if为什么不选D呀！短语有whether……or not,whether or not和if……or 有if……or not。whether或if均可表示“是否”的情况如 weather和if在宾语从句中的区别,特别是什么时候与or...not 连用 句子改错,要原因和理由.If you are there or not doesn't matter much. 帮忙造八年级if和whether or not连接的宾语从句 I am not sure if it will be fine or cloudy?我知道if不能和or not连用,但if能与or连用吗?比如：The police are not sure if the child has been kidnapped or killed.这句话是否正确? if到底能不能跟or not 连用呢..or not 和if...or not的区别吗。比如说什么宾语从句后什么的还有还有 If you are not sure __a woman is married or not.中答案写whether那为什么就不可以用if了