成千上万的人都在看它们，但当我不认识的人在街上跟我打招呼的时候，我还是觉得很奇怪。

They're watched by millions, but I still find it strange when people I don't know say hello to me in the street.

youdao

她从来都不跟我打招呼。

She never says "hello" to me.

youdao

他礼貌地跟我打招呼。

He greeted me politely.

youdao

So, I get up and sometimes I don't set the alarm and I get up late; I stagger out of bed; I wake the kids; I greet the servants; I get ready; I make breakfast.

我起床，有时候忘记调闹钟,结果起床晚了，我从床上踉跄爬起;,我叫醒孩子，跟仆人打招呼，作准备;,做早餐。

耶鲁公开课 - 心理学导论课程节选

I stepped away for only 15 minutes to say hello to everyone.

我走开了15分钟跟大家打招呼。

Where 实战 - SpeakingMax英语口语达人