1.Do please learn the usage of the five prepositions about direction.What to notice is that qualifiers should be added before them when they are used.(这句可能有些欠妥,后面前后主语可能会引起歧义,看有没其他人有更好的答案吧)
2.Specifically,definite articles,possesive pronouns,or possessive nouns can used after these prepositions.Anyway,don't forget the qualifiers,and then the nouns.
为什么我觉得这个像是老师的讲课内容呢,囧
翻译成英文的话这样子应该没错。
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