那是我必須做的。

That's what I have to do.

Source: Tatoeba

Sentence Composition

=1 那是 nàshi
  1. (coll.) of course
  2. naturally
  3. indeed
=1 那是 nàshì
  1. (colloquial) of course
  2. of course
2 我 wǒ
  1. I
  2. me
  3. my
3 必須 bìxū
  1. to have to
  2. must
  3. compulsory
  4. necessarily
4 做 zuò
  1. to make; to produce
  2. to write; to compose
  3. to do; to engage in; to hold (a party etc)
  4. (of a person) to be (an intermediary, a good student etc); to become (husband and wife, friends etc)
  5. (of a thing) to serve as; to be used for
  6. to assume (an air or manner)
=5 的 de
  1. of; ~'s (possessive particle)
  2. (used after an attribute when it modifies a noun)
  3. (used at the end of a declarative sentence for emphasis)
  4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 pígéde "one made of leather" or 跑堂儿的 pǎotángrde "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 xīnde "new one")
  5. also pr. dì or di in poetry and songs
=5 的 dī a taxi; a cab (abbr. for 的士 dīshì)
=5 的 dí really and truly
=5 的 dì (bound form) bull's-eye; target