主动问好怎么说英语

There are many ways to say "hello" in English. Some common options include:
"Hello"
"Hi"
"Good morning/afternoon/evening"
"Hey"
It's generally a good idea to use a greeting that is appropriate for the time of day and the level of formality of the situation. For example, "Hello" or "Good morning" might be more appropriate in a formal setting, while "Hi" or "Hey" might be more suitable in a casual setting.