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  5. "He bought a book yesterday."

"He bought a book yesterday."

Translation:Anh ấy đã mua một quyển sách vào ngày hôm qua.

July 17, 2016

3 Comments

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https://www.duolingo.com/profile/NcCam1

Why is "ngày" not optional before "hôm qua" ? I think "ngày" is only required if I want to say which day of the month I bought the book.

December 1, 2016

https://www.duolingo.com/profile/qm1224

Is "đã" optional in this sentence? As "hôm qua" implies the time of action already


https://www.duolingo.com/profile/ckhadung

You're right. The answer without "đã" is already in the database but the main answer still contains this word to maintain consistency.

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