…還是…grammar point · tier 1 · …還是… alternative question (A or B?)
Choice question: lay out two named options and ask the listener to pick one.
字源 FORM what the parts do
還 is a road and a foot (辶) going back the way one came; 睘 gives the sound, huán. Said fast and often, that return-word wore light into the everyday hái. 是 settles which one. Between the two options it asks the listener to weigh both and come back to one.
故事 STORY a scene to remember it by
A fork in the road, both branches in view, and the foot walks back down one of them.
字源記憶法
框 · Frame
[A] 還是 [B]？
觸 · Trigger
You hold up two named options and want the listener to choose between them.
序 · The move
1Name the two options in full, the second mirroring the first's shape.Are there exactly two options, both spelled out, not one statement to accept or reject?
2Set 還是 between them; drop 嗎 — the choice already makes it a question.Did 嗎 stay out? 還是 already asks.
3Read it back; the answer is one of the two branches, not yes or no.Would the listener reply by naming A or B, not by saying yes/no?
還是 makes a question — pick one of two; 或是 stays inside a statement — A or B, both fine. Swap by whether you are asking or telling.
✗ 你喝茶或是咖啡？ → ✓ 你喝茶還是咖啡？
✗ 你喝茶還是咖啡嗎？ → ✓ 你喝茶還是咖啡？
✗ 你想去還是？ → ✓ 你想去還是不去？
English uses one "or" in both "tea or coffee?" and "tea or coffee is fine." Chinese splits them: 還是 for the question, 或是 for the statement. Learners reach for 或是 in questions.