Chinese online lessons: Question words
excercises for this chapter here: 
3 ways to ask a question (attention: these ways can not be combined):
1. INTERROGATIVE PARTICLE – mostly 吗 <ma>
We place 吗 <ma> at the end of a sentence (word order remains the same as in the indicative sentence)
他是学生。
<Tā shì xuéshēng.>
HE IS A STUDENT.
他是学生吗？
<Tā shì xuéshēng ma?>
IS HE A STUDENT?
中文好学吗?
<Zhōngwén hǎoxué ma?>
Chinese good to study ma?
IS CHINESE EASY TO LEARN?
2. VERB – NEGATION – VERB
他是不是中国人？
<Tā shì-bu-shi Zhōngguórén?>
IS HE CHINESE?
你要不要喝点茶？
<Nǐ yào-bu-yao hē diǎn chá?>
You to want-not-to want to drink a bit of tea?
WILL YOU HAVE SOME TEA?
你有没有中国朋友？
<Nǐ yǒu-mei-you Zhōngguó péngyǒu?>
You to have-not-to have a Chinese friend?
DO YOU HAVE A CHINESE FRIEND?
3. INTERROGATIVE WORDS
这是什么？
<Zhè shì shénme?>
This to be what?
WHAT IS THIS?
这是什么茶？
<Zhè shì shénme chá?>
This to be what tea?
WHAT TEA IS THIS?
你什么时候要去中国？
<Nǐ shénmeshíhou yào qù Zhōngguó?>
You when future indicator to go (to) China?
WHEN ARE YOU GOING TO CHINA?
我们什么时候要去吃饭？
<Wǒmen shénmeshíhou yào qù chīfàn?>
We when to go to eat?
WHEN ARE WE GOING TO EAT?
他是谁？
<Tā shì shéi?>
He to be who?
WHO IS HE?
这是谁的车？
<Zhè shì shuí de chē?>
This to be who´s vehicle?
WHO’S CAR IS THIS?
你在哪里？
<Nǐ zài nǎli?>
You to be where?
WHERE ARE YOU?
你从哪里来？
<Nǐ cóng nǎli lái?>
You from where to come?
WHERE DO YOU COME FROM?
这里有很多东西。你最喜欢哪一个？
<Zhèli yǒu hěnduō dōngxi. Nǐ zuì xǐhuan nǎyīgè?>
Here to be a lot of things. You the most to like which (one)?
THERE ARE MANY THINGS HERE. WHICH ONE DO YOU LIKE THE MOST?
你是哪国人？
<Nǐ shì nǎ-guó-rén?>
You to be which-state-person?
WHICH COUNTRY ARE YOU FROM?
你有几个中国朋友？
<Nǐ yǒu jǐge zhōngguó péngyǒu?>
You to have how many Chinese friends?
HOW MANY CHINESE FRIENDS DO YOU HAVE?
现在几点？
<Xiànzài jǐ diǎn?>
Now how many o´clock?
WHAT’S THE TIME NOW?
中国有多少人口？
<Zhōngguó yǒu duōshǎo rénkǒu?>
China to have how many citizens?
HOW MANY CITIZENS DOES CHINA HAVE?
这个多少钱？
<Zhège duōshǎo qián?>
This how much money?
HOW MUCH IS IT?
你多大了？
<Nǐ duōdà le?>
You how big?
HOW OLD ARE YOU?
长城多长？
<Chángchéng duōcháng?>
Great Wall how long?
HOW LONG IS THE GREAT WALL OF CHINA?
你在欧洲多长时间了？
<Nǐ zài Ōuzhōu duōcháng shíjiān le?>
You in Europe how long time le?
HOW LONG TIME HAVE YOU BEEN IN EUROPE?
这个汉语怎么说？
<Zhège hànyǔ zěnme shuō?>
This Chinese how to say?
HOW TO SAY THIS IN CHINESE?
天安门怎么走？
<Tiān’ānmén zěnme zǒu?>
Tiān’ānmén how to go?
HOW TO GET TO TIAN’AN MEN?
你怎么没来？
<Nǐ zěnme méi lái?>
You “how come” didn’t come?
HOW COME YOU DIDN’T COME?
你最近怎么样？
<Nǐ zuìjìn zěnmeyàng?>
You recently how?
HOW IS IT GOING RECENTLY?
这部电影怎么样？
<Zhè bù diànyǐng zěnmeyàng?>
This film how?
HOW IS THIS FILM?
他汉语说得怎么样？
<Tā hànyǔ shuō de zěnmeyàng?>
He Chinese to speak de how?
HOW DOES HE SPEAK CHINESE?
more on this construction in verb complement