in the doctor's和at the doctor's的区别 in the hospital和at the doctor'...

in the doctor's\u548cat the doctor's\u7684\u533a\u522b

in the doctor's\u548cat the doctor's\u6ca1\u6709\u4ec0\u4e48\u533a\u522b,\u90fd\u8868\u793a\u5728\u8bca\u6240.
in \u8868\u793a\u5730\u70b9(home\u548cschool\u4f8b\u5916),at \u8868\u793a\u6708\u4efd\u53ca\u65e5\u671f(home\u548cschool),on \u8868\u793a\u65f6\u95f4\u6bb5.
in \u548c at \u4f7f\u7528\u7684\u8303\u56f4\u5927,on \u4f7f\u7528\u7684\u8303\u56f4\u5c0f.

thedoctor's\u5728\u53e5\u5b50\u4e2d\u7684\u610f\u601d\u662f\uff1a\u533b\u751f\u7684\u8bca\u6240\u3002\u82f1\u8bed\u4e2d\uff0c\u5728\u8868\u793a\u67d0\u4eba\u7684\u5bb6\u3001\u5e97\u94fa\u3001\u8bca\u6240\u6216\u516c\u5171\u5efa\u7b51\u7269\u65f6\uff0c\u540d\u8bcd\u6240\u6709\u683c\u540e\u5e38\u5e38\u4e0d\u51fa\u73b0\u5b83\u6240\u4fee\u9970\u7684\u540d\u8bcd\u3002\u53c8\u5982\uff1aIwenttomyuncle'slastweek.\u6211\u4e0a\u5468\u5230\u4e86\u6211\u53d4\u53d4\u5bb6\u3002HewentshoppingatMr.Black's.\u4ed6

in the doctor's和at the doctor's没有什么区别，都表示在诊所。
in 表示地点(home和school例外)，at 表示月份及日期(home和school)，on 表示时间段。
in 和 at 使用的范围大，on 使用的范围小。
补充的问题，应该用and didn't talk，因为原句用的是过去时。
魏佳媛
见习魔法师

你好！in the doctor's和at the doctor's没有什么区别，都表示在诊所。
第二个问题，应该用and didn't talk

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