—I'm going to the post office. —____ you're there,can you get me some stam—I'm going to the post office.—____ you're there,can you get me some stamps?A.whileB.if答案是A.B哪里错了?

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—I''mgoingtothepostoffice.—____you''rethere,canyougetmesomestam—I''mgoingtothepostoffice.—____you''rethe

—I'm going to the post office. —____ you're there,can you get me some stam—I'm going to the post office.—____ you're there,can you get me some stamps?A.whileB.if答案是A.B哪里错了?
—I'm going to the post office. —____ you're there,can you get me some stam
—I'm going to the post office.
—____ you're there,can you get me some stamps?
A.while
B.if
答案是A.
B哪里错了?

—I'm going to the post office. —____ you're there,can you get me some stam—I'm going to the post office.—____ you're there,can you get me some stamps?A.whileB.if答案是A.B哪里错了?
if 是引导条件从句的,翻译为“如果”,例如:I will go to the park if it is sunny tomorrow..在这个句子中,意思是不合适的.楼主不要用中文的思路去理解.A已经说自己要去邮局了,B没有必要再说“如果”.

while表示将来时间中可能会做的事,if木有这等含义。
望能采纳,谢谢!