正是
zhèng​shì HSK2

precisely

正是 zhèng​shì
precisely adverb
is precisely

刚才在门口敲门的那个人，正是我们要找的老师。

gāng​cái zài mén​kǒu qiāo​mén de nà gè rén, zhèng​shì wǒ​men yào zhǎo de lǎo​shī.

The person knocking on the door just now is exactly the teacher we are looking for.

it is precisely adverb
used to emphasize that something is the exact reason, purpose, or state of being

这种永不言败的精神，正是他走向成功的关键。

zhè zhǒng yǒng bù yán bài de jīng​shén, zhèng​shì tā zǒu​xiàng chéng​gōng de guān​jiàn.

This never-say-die spirit is precisely the key to his success.

Frequency
Movie subtitles
76.1 per million appears in 29% of films
Written text
108.7 per million

Details
HSK 3.0
Level 2

Sources
Definitions
CC-CEDICTAI-generated definitions
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)