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1、Good morning, thank you.

2、这些用法没有严格的区分和规定，根据个人习惯和对话场景来选择。

3、Generally, good morning is used for the first meeting every day to express hello.

4、If it is a person with close relationship, it is usually used to show that it is more cordial and casual.

本文到此结束，希望对大家有所帮助。