It is polite to greet a person you know. However, you don't always have time to stop and have a conversation. Just remember to smile as you say hello. A small wave is also polite. Sometimes you pass the same person a second time on the same day. You can say "hello again" or just smile.
·Slow down to greet someone you know. You don't have to stop what you are doing (walking, working, shopping).
放慢动作来同认识的人打招呼,不必停下(脚步,工作,购物)。
·Say an appropriate form of hello.
选择正确的打招呼方式。
·Smile and wave.
微笑+挥手。
Useful phrases
·Hello
·Hi
·Good morning
·Good afternoon
·Good evening*
·Hey, John.
·How's it goin'?**
*Good night is a farewell(goodbye) phrase. It is NOT a greeting to use at night time.
"Good night."是用来告别(再见)的短语,并不是晚间打招呼的说法。
**Native speakers often shorten "going" to "goin" in casual greetings.
母语者在比较随意地问候时经常将"going"缩略说成"goin"。
Slang greetings in passing
Using slangin a greeting is typicalbetween close friends. Teens often use slang when they greet each other. Certain English speaking countries also have their own popular form of "hello".