汤姆是我第一个男朋友。

Tom was my first boyfriend.

Source: Tatoeba

Sentence Composition

1 汤姆 Tāngmǔ Tom (name)
=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 我 wǒ
  1. I
  2. me
  3. my
4 第一个 dì-yīgè the first (person, thing)
5 男朋友 nánpéngyou boyfriend