Who
Who is here?
谁 shéi
谁在这里?Shéi zài zhèlǐ?
What
What do you like to eat?
什么 shénme
你喜欢吃什么?
Nǐ xǐhuan chī shénme?
Where
Where are you going?
哪儿 / 哪里 nǎr / nǎlǐ
你去哪儿?or 哪里?
Nǐ qù nǎr? Nǎlǐ?
Which one
Which one do you like?
哪个 nǎ ge
你喜欢哪个?
Nǐ xǐhuan nǎ ge?
Which ones
Which countries have you been to?
哪些 nǎ xiē
你去过哪些国家?
How many (small number)
How many people are in your family?
几 jǐ
你家有几口人?
Nǐ jiā yǒu jǐ kǒu rén?
How many / How much
How many friends do you have?
How much is this book?
多少 duōshao
你有多少个朋友?
Nǐ yǒu duōshao gè péngyou?
这本书多少钱?
Zhè běn shū duōshao qián?
How
How do you go to school?
怎么 zěnme
你怎么去学校?
Nǐ zěnme qù xuéxiào?
Why
Why are you learning Chinese?
为什么 wèishénme
你为什么学中文?
Nǐ wèishénme xué Zhōngwén?
When
When do you usually go home?
什么时候 shénme shíhou
你平时什么时候回家?
Nǐ píngshí shénme shíhòu huí jiā?
What time
What time do you go to bed every day?
几点 jǐ diǎn
你每天几点睡觉?
Nǐ měitiān jǐ diǎn shuìjiào?
How is / How about
How are you today?
How’s the weather today?
怎么样 zěnmeyàng
你今天怎么样?
Nǐ jīntiān zěnme yàng?
今天天气怎么样?
Jīntiān tiānqì zěnmeyàng?
How + adjective
How tall is he?
How old are you?
How long is it? (length)
How long have you worked at the State Department?
多 + adj. duō + adj.
他多高?Tā duō gāo?
你多大?Nǐ duō dà?
多长?Duō cháng?
你在国务院工作了多久了?
Nǐ zài Guówùyuàn gōngzuò le duōjiǔ le?