Question

I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you. A．if ; Whether

I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you. A．if ; Whether B．whether; Whether C．if ; That D．if ; If

Answer 1

D
试题分析：句意：我不知道是否他明天回来，如果他来了我将告诉你。if引导宾语从句翻译为是否，if引导条件状语从句翻译为如果。whether是否，只能引导宾语从句。根据句意，故选D。