作业帮They don't know if the doctor_____here.if he _____ ,they will meet him at once A.will come ,comes B.will come ,will come C.comes ,will come D.comes,comes
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They don't know if the doctor_____here.if he _____ ,they will meet him at once A.will come ,comes B.will come ,will come C.comes ,will come D.comes,comes
They don't know if the doctor_____here.if he _____ ,they will meet him at once
A.will come ,comes B.will come ,will come C.comes ,will come D.comes,comes
They don't know if the doctor_____here.if he _____ ,they will meet him at once A.will come ,comes B.will come ,will come C.comes ,will come D.comes,comes
They don't know if the doctor_____here.if he _____ ,they will meet him at once
A.will come ,comes B.will come ,will come C.comes ,will come D.comes,comes
答：A
译：他们不知道医生来不来这里.如果他来的话,他们就会立刻去见他.
析:第一个if=whether引导宾语从句,该用一般将来时还得用一般将来时.后面的if从句是条件状语从句,用现在时表将来.
D,前一个是是否的意思，主句从句时态一致。后一个是如果的意思，是if引导的主将从一般现在时
D吧，问老师嘛
A，第一句：他们不知道这个医生是否回来这 if表是否 宾语从句 将来时；第二句：如果他来了，他们会在第一时间会见他 if 表如果 条件状语从句 主句将来时 从句现在时