Chinese questions can be formed using several strategies, including question particles (吗), question words (什么, 哪里, 谁), and the affirmative-negative pattern (verb-不-verb). The choice of strategy depends on the type of information being requested. Unlike English, Chinese does not change word order to form questions.
你今天晚上想吃什么?
nǐ jīntiān wǎnshang xiǎng chī shénme?
What do you want to eat tonight?
这本书你看了没有?
zhè běn shū nǐ kàn le méiyǒu?
Have you read this book?
他是不是已经到上海了?
tā shì bu shì yǐjīng dào Shànghǎi le?
Has he already arrived in Shanghai?