昨天是最后一天上学。

Yesterday was the last day of school.

Source: Tatoeba

Sentence Composition

1 昨天 zuótiān yesterday
=2 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=2 是 shì variant of 是 shì
3 最后一天 zuìhòuyītiān final day
4 上学 shàngxué
  1. to go to school
  2. to attend school