AとBとどちら
Ask which of two choices
You'll be able to ask which of two specific options someone prefers or which has a property.

りんごとみかんとどちらが好きですか。
ringo to mikan to dochira ga suki desu ka.
What do you think this sentence means?
Which do you prefer, apples or mandarins?
Ask a comparison between two choices
AとBとどちら asks which of two choices has a property or is preferred. Put と after each option before どちら.
電車とバスとどちらが速いですか。
densha to basu to dochira ga hayai desu ka.
Which is faster, the train or the bus?
Form and use AとBとどちら
Use どちら for two alternatives. With three or more items, a question with どれ and 一番 is often more suitable. Conversational どっち is less formal.
電車とバスとどちらが速いですか。
densha to basu to dochira ga hayai desu ka.
Which is faster, the train or the bus?
お茶とコーヒーとどちらが好きですか。
ocha to koohii to dochira ga suki desu ka.
Which do you prefer, tea or coffee?
新幹線と飛行機とどちらが便利ですか。
shinkansen to hikouki to dochira ga benri desu ka.
Which is more convenient, the shinkansen or a plane?
夏と冬とどちらが好きですか。
natsu to fuyu to dochira ga suki desu ka.
Which do you like better, summer or winter?
この赤いシャツと青いシャツとどちらが似合いますか。
kono akai shatsu to aoi shatsu to dochira ga niaimasu ka.
Which suits me better, this red shirt or the blue one?
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