我该去买东西了，我一小时后回来。

I have to go shopping. I'll be back in an hour.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 该 gāi
  1. should
  2. ought to
  3. probably
  4. must be
  5. to deserve
  6. to owe
  7. to be sb's turn to do sth
  8. that
  9. the above-mentioned
3 去 qù
  1. to go
  2. to go to (a place)
  3. (of a time etc) last
  4. just passed
  5. to send
  6. to remove
  7. to get rid of
  8. to reduce
  9. to be apart from in space or time
  10. to die (euphemism)
  11. to play (a part)
  12. (when used either before or after a verb) to go in order to do sth
  13. (after a verb of motion indicates movement away from the speaker)
  14. (used after certain verbs to indicate detachment or separation)
4 买东西 mǎidōngxi to do one's shopping
=5 了 le
  1. (completed action marker)
  2. (modal particle indicating change of state, situation now)
  3. (modal particle intensifying preceding clause)
=5 了 liǎo
  1. to finish
  2. (used with 得 dé or 不 bù after a verb to express (im)possibility, as in 忘不了 wàngbuliǎo "cannot forget")
  3. (literary) (usually followed by a negative such as 无 wú or 不 bù) completely (not); entirely (not); (not) in the least
  4. to understand clearly (variant of 了 liǎo)
=5 了 liǎo
  1. (of eyes) bright
  2. clear-sighted
  3. to understand clearly
=5 了 liào unofficial variant of 瞭 liào
6 我 wǒ
  1. I
  2. me
  3. my
7 一小 yīxiǎo
  1. (dialectal) since childhood; as a child; from when one was very young
  2. since childhood; as a child; from when one was very young
=8 时 shí old variant of 时 shí
=8 时 Shí surname Shi
=8 时 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period
=9 后 Hòu surname Hou
=9 后 hòu
  1. empress
  2. queen
  3. (archaic) monarch
  4. ruler
=9 后 hòu
  1. back
  2. behind
  3. rear
  4. afterwards
  5. after
  6. later
  7. post-
=10 回来 huílai to return; to come back
=10 回来 huílái
  1. (to come or bring) back (used after a verb to indicate direction towards the speaker)
  2. back (used after a verb to indicate direction towards the speaker)
  3. to return; to come back; to be back