“打招呼”造句

他跟顾客打招呼时直呼其名，并问他们身体可好。
He greets customers by name and enquires about their health.

他向他们挥一下手，热情地笑着向他们打招呼。
He greeted them with a wave and a broad smile.

他们俩都笑着跟朋友们点头打招呼。
Both of them smiled and nodded at friends.