打招呼算是最基本的口语了，跟人见面第一句肯定要打招呼，如果你还停留在"Hello?""How are you?""How do you do?"的层次上，那你可能要听不懂美国人说话了。美国人喜欢说的是：- How are you doing?- I'm doing good。
CHAPTER 04-13 睡前打招呼1.I's time to goto bed. 上床睡觉的时间到了。2.It's dark outside.It's time to go to sleep. 外面很暗，该去睡觉了。3.Mom， I'm not tired yet.
Greeting 打招呼Hello, everyone. 大家好Good morning, everyone. 同学们，上午好Good afternoon, everyone. 同学们，下午好How are you today? 今天过得怎么样？
