摘要:2.引导词whether和if的选用 二者引导宾语从句时.一般可换用.但在下列情况下.通常只能用whether而不能用if. 1)在动词discuss和介词后作宾语时.如: We discussed whether we should close the shop. It all depends on whether they will support us. 2)在引导词后紧接or not时.如: We didn't know whether or not she was ready.(比较:We didn't know whether/if she was ready or not.) 3)当用if易引起歧义时.如: Please let me know whether you likeit.(若该句用if.也可理解为:如果你喜欢它.请告诉我.)

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