In the afternoon of March 12th,we had a charity bazaar in the playground of our school.改错
问题描述：
In the afternoon of March 12th,we had a charity bazaar in the playground of our school.改错
答
on the afternoon........
答
we arrived at a hotel in the western part of city已经是一个完整的句子了,前面缺少一个when来构成状语从句。 如果把in the afternoon去掉的话，
答
改正：把In改成On.
1.the afternoon of March 12th意思是“3月12日的下午”,这是指具体某一天的下午,此时介词必须使用on,而不能使用in.
2.in the playground也可以使用,意思也是“在操场上”,不过on the playground更加常用.