`1` We, who was dancing alone on the street, saw a man.
MĐQH who: N(person)+ who+ V+ O: thay thế cho danh từ chỉ người.
`2` James will buy a house whose yard must be large.
MĐQH whose: N(person, thing)+ whose+ N+ V: thay thế cho các đại từ sở hữu her, his, their, one’s.
`3` I can't find the store which sells dairy products.
MĐQH which: thay thế cho danh từ chỉ vật.
N(thing)+ which+ V+ O.
N(thing)+ which+ S+ V.
`4` Do you know the reason which Ann left for?
MĐQH which: thay thế cho danh từ chỉ vật.
N(thing)+ which+ V+ O.
N(thing)+ which+ S+ V.
`5` They live in a big city where more than a billion people live.
MĐQH where: N(place)+ where+ S+ V: thay thế cho từ chỉ nơi chốn như there, that place.
