Characters
Your sentence
那个 人 是 我 的 老师
Words in this sentence
那个
that one; that thing; that (as opposed to this); (used before a verb or adjective for emphasis); (used to humorously or indirectly refer to sth embarrassing, funny etc, or when one can't think of the right word); (used in speech as a filler, similar to "umm", "you know" etc); (euph.) menstruation; sex; also pr. nèige
人
person; people
是
to be (followed by substantives only); correct; right; true; (respectful acknowledgement of a command) very well; (adverb for emphatic assertion)
我
I; me; my
的
of; ~'s (possessive particle); (used after an attribute when it modifies a noun); (used at the end of a declarative sentence for emphasis); (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"); also pr. dì or di in poetry and songs
Particle
老师
teacher