1. It literally means "please take care of me very much". It's a humble way for greeting and means "please treat me kindly." 2. 哪 means "where" and the phrase is a rhetorical question - "where is it?" This phrase is basically only used as a short answer; you can use it to humbly or strongly deny something, based on the context. You can see the example from Fiona. 3. It means what's up. It's quiet informal and commonly used in oral chinese. 4. Yes, it literally means "oh my mum", while it means "oh my god".

1.例子（for example）：大家好，我是新来的同事。请多多关照 2.例子（for example）：我说：“你的裙子真好看”。她腼腆的笑着说“哪有呀” 3.干嘛呢？means what‘s up? yes,it's common in oral Chinese 4.yes

1. When you join a new group/class/company,and you need to introduce yourself to a person or a group of people or,in order to show your respect you can say "初次见面，请多多关照。"(it's a little bit weird if you say that to Chinese,its kind of Japanese way I think 🤣 2. When someone compliments you, and you want to show your modest, you can say哪有or 哪里哪里 they mean NOT AT ALL. or you can say 3. It's like WHAT ARE YOU DOING. It's oral and common but not in greeting!If you do 'plz say "在干嘛？"or "在干吗呢？" (ONLY WITH CLOSE FRIENDS) 4.YES 🤣🤣🤣🤣🤣

Hello, I'm Albert. Where are you from? May I know you?

1.例子（for example）：大家好，我是新来的同事。请多多关照 2.例子（for example）：我说：“你的裙子真好看”。她腼腆的笑着说“哪有呀” 3.干嘛呢？means what‘s up? yes,it's common in oral Chinese 4.yes