The short form of "they are." This is the everyday spoken form; "they are" written out in speech usually means the speaker is stressing something (They ARE coming, whatever you think).

The short form of "they are.""they're" 是"they are"的縮寫。This is the everyday spoken form這是日常口語的說法；"they are" written out in speech如果口語中把"they are"完整講出來 usually means the speaker is stressing something通常表示說話的人在強調什麼 (They ARE coming, whatever you think)（例如 They ARE coming, whatever you think＝他們就是會來，不管你怎麼想）。

It does everything "they are" does: describing — They're tired; locating — They're in the kitchen; and building the -ing tense — They're waiting for you. Like all uses of "they," it covers people, animals, and objects alike, and also the single person of unknown gender: Whoever left this, they're very kind.

It does everything "they are" does它能做"they are"能做的所有事：describing用來描述—— They're tiredThey're tired（他們很累）；locating用來表示位置—— They're in the kitchenThey're in the kitchen（他們在廚房）；and building the -ing tense還有用來構成進行式—— They're waiting for you.They're waiting for you.（他們在等你）。Like all uses of "they,"就像"they"的所有用法一樣，it covers people, animals, and objects alike它可以指人、動物，也可以指東西，and also the single person of unknown gender也可以指性別不明的單一個人：Whoever left this, they're very kind.Whoever left this, they're very kind.（不管是誰留下這個的，他人真好）。

Register is friendly and normal — messages, speech, dialogue, most online writing. Strict formal writing tends to spell it out.

Register is friendly and normal語域親切自然—— messages簡訊、speech口語、dialogue對話、most online writing大部分的網路文字。Strict formal writing tends to spell it out嚴謹的正式書寫通常會把它完整拼出來。

Sound-wise it is usually one syllable, and here is the thing that trips everyone: in most accents it lands on exactly the same sound as "there" and "their." Your ear cannot separate them. Only the grammar of the sentence tells you which one it is.

Sound-wise it is usually one syllable發音上通常是一個音節，and here is the thing that trips everyone這裡就是大家都會被搞混的地方：in most accents在大部分口音裡 it lands on exactly the same sound as "there" and "their."它的發音跟"there"和"their"完全一樣。Your ear cannot separate them光靠耳朵是分不出來的。Only the grammar of the sentence tells you which one it is只有句子的文法才能告訴你是哪一個。