The question-words stand, where the answer would stand, if the sentence was a simple statement.
谁 shuí (= who?) and 谁 shéi (= who?) are equal.
谁 | 去 | 中 | 国 | ? |
shuí | qù | zhōng | guó | _ |
who | go | middle | country | _ |
who? | go to, pass away, remove | China | ? | |
Who goes to China? |
他 | 们 | 去 | 中 | 国 | 。 |
tā | men | qù | zhōng | guó | _ |
he | pl suffix | go | middle | country | _ |
they | go to, pass away, remove | China | 。 | ||
They go to China. |
他 | 是 | 谁 | ? |
tā | shì | shuí | _ |
he | be | who | _ |
he, him, other | to be, correct, yes | who? | ? |
Who is he? |
他 | 是 | 王 | ( | 先 | 生 | ) | 。 |
tā | shì | wáng | _ | xiān | shēng | _ | _ |
he | be | king | _ | first | give birth | _ | _ |
he, him, other | to be, correct, yes | king | ( | Mr | ) | 。 | |
He is Mr Wang. |