你沒有必要買這本書。

You didn't need to buy the book.

Source: Tatoeba

Sentence Composition

=1 你 nǐ you (informal, as opposed to courteous 您 nín)
=1 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
2 沒有 méiyǒu
  1. haven't
  2. hasn't
  3. doesn't exist
  4. to not have
  5. to not be
3 必要 bìyào
  1. necessary
  2. essential
  3. indispensable
  4. required
4 買 mǎi
  1. to buy
  2. to purchase
=5 這 zhè
  1. (pronoun) this; these
  2. (bound form) this; the (followed by a noun)
  3. (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)
=5 這 zhèi (coll.) this
6 本書 běnshū
  1. book of genealogy
  2. original book; original work
  3. this book