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Doesn't is the short form of does not. You use it with he, she, it, or a name: "She doesn't like tea." The marks the missing letter o in not. This is the normal way to speak, and the normal way to write in messages, stories, and most school work. In very careful or very formal writing, people still write does not in full. Do not use doesn't with I, you, we, or they — that is don't. After doesn't, use the plain verb: "doesn't go," not "doesn't goes." Though actually, you will hear "he don't" in some spoken dialects; teachers and tests will still mark it wrong.
does not 的縮寫（他／她／它「不…」；I/you/we/they 要用 don't）
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
doesn'tverb/ˈdʌz.ənt/
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Does not (negative auxiliary)
- The Furr'd Law-cats are most terrible and dreadful Monsters, they devour little Children, and trample over Marble-Stones. Pray tell me, Noble Topers, do they not deserve to have their Snouts slit ? The Hair of their Hides do's n't lie outward, but inwards; and every Mother's Son of 'em, for his Devise, wears a gaping Pouch, but not all in the same manner; for some wear it ty'd to their Neck Scarfwise, others upon the Breech, some on the Paunch, others on the Side, and all for a Cause, with Reason and Mystery: They have Claws so very strong, long, and sharp, that nothing can get from 'em, that is once fast between their Clutches: Sometimes they cover their Heads with Mortar-like Caps, at other times with mortify'd Caparisons.
- Well, I must borrow Epidicuss help, tho' I pay dearly for th' use of 't ; but I shall send him to '''Bridewel with his Skin stript o're his Ears, if he ''doesn't procure the hundred Pounds as soon as the last Word's pronounc'd.
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archaicdialectalDost not
- But Pre'thee tell me, that Woman had very Considerable Friends. Thou doesn't hear that she has Peacht any body, dost thou?
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。