【題目】I don’t know he’ll come. I will let you know he comes.

A.if; whetherB.whether; whetherC.if; ifD.whether; that

【答案】C

【解析】

句意:我不知道他是否會來,如果他來了,我會讓你知道。

考查賓語從句和狀語從句中ifwhether用法。if如果,是否;whether是否。第一句為賓語從句,連接詞可用ifwhether,表“是否”;第二句考查條件狀語從句,符合主將從現(xiàn)的原則。只能由if引導。故選C。

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