Subject + 与/跟 + Person + 打招呼
The verb-object phrase 打招呼 (dǎ zhāohu) means 'to greet' or 'to say hello.' It describes the act of acknowledging someone by waving, nodding, or saying a few words. The particle 与 or 跟 is used before the person being greeted.
早上遇到同事,我都会主动打招呼。
Zǎoshang yù dào tóngshì, wǒ dōu huì zhǔdòng dǎ zhāohu.
When I see colleagues in the morning, I always greet them first.
他跟每个人都热情地打招呼。
Tā gēn měi gè rén dōu rèqíng de dǎ zhāohu.
He greets everyone warmly.
她太害羞了,不敢跟陌生人打招呼。
Tā tài hàixiū le, bù gǎn gēn mòshēng rén dǎ zhāohu.
She is too shy to greet strangers.