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Sentence explanations

1. ドアを開けてください。

   Please open the door.

   ドア

   door

   開けてください

   please open

   More detail

   ドア means “door.” It is a noun, written in katakana as a commonly used loanword. In this sentence, the particle を follows it and marks the door as the thing affected by the action. 開けてください is a polite request meaning “please open.” Its base verb is 開ける (“to open”); 開けて is its connecting form, and adding ください makes a request. This pattern is reusable: verb-てください means “please [do the verb].” For example, 見てください。 means “Please look.” The next-context sentence uses 閉めてください, “please close,” showing the same request pattern with a different verb. 閉める is the base verb, and 閉めて is its corresponding form. Together, ドアを (“the door” as the object) and 開けてください (“please open”) produce the complete meaning: “Please open the door.”

2. 窓を閉めてください。

   Please close the window.

   窓

   window

   閉めてください

   please close

   More detail

   窓 means “window” here. It is a noun and can be reused with an appropriate particle: 窓を開ける means “open the window,” while 窓を閉める means “close the window.” In this sentence, を marks 窓 as the direct object of the action; it is not part of the noun itself. 閉めてください is a polite request meaning “please close.” The lexical verb is 閉める, “to close,” and its て-form is 閉めて. The pattern て-form + ください makes a polite request for someone to perform the action. For example, ドアを閉めてください。 means “Please close the door.” Together, 窓を identifies the thing to be acted on, and 閉めてください politely requests closing it: “Please close the window.” The wording is a polite everyday request.

3. それをつけてください。

   Please turn it on.

   それ

   it; that

   つけてください

   please turn on

   More detail

   それ means “it” or “that” here. It is a demonstrative pronoun, and the fixed translation supports the reading “it”; the specific device or object is not identified in the supplied text. Japanese contrasts これ (“this,” near the speaker), それ (“that” associated with the listener or already-mentioned context), and あれ (“that over there,” away from both). The following を marks それ as the object of the action. つけてください uses the base verb つける plus its て-form, つけて, and ください (“please”). In this sentence, つける means “turn on,” as with a light or device. The same verb can have other meanings in other contexts, such as “attach,” so the object and situation determine the intended sense. The pattern てください is a polite request: 見てください means “Please look,” for example. Together, それをつけてください means “Please turn it on.” The object is それ, を marks that object, and つけてください politely requests the action. The corresponding context sentence それを消してください uses 消す (“turn off” or “extinguish”) instead, showing the contrast between turning something on and turning it off.

4. それを消してください。

   Please turn it off.

   それ

   it

   消して

   turn off

   ください

   please

   More detail

   それ means “that” or “it” in the demonstrative-pronoun system. Here, the fixed translation identifies it as the thing to be turned off. A useful contrast is これ, “this,” as in the supplied next sentence; the choice depends on the demonstrative pattern and context, not on an English article. 消して is the て-form of the verb 消す. In this sentence, 消す means “turn off,” although the same verb can mean “erase” or “delete” in a different context. The て-form connects to ください to make a polite request. For example, 電気を消してください。 means “Please turn off the light.” ください follows a verb in the て-form in this request pattern: [て-form] + ください. It makes the request polite; the lexical action comes from 消して, not from ください by itself. The same pattern can be used with other verbs, such as 見てください。 “Please look.” Together, それを marks the item affected by the action, and 消してください asks the listener politely to perform 消す on it. Thus それを消してください。 means “Please turn it off.”

5. これをください。

   Please give me this.

   これ

   this

   ください

   please

   More detail

   これ means “this” and is a demonstrative pronoun: it can stand on its own to identify something near the speaker or otherwise presented as “this.” It does not show grammatical gender or number. In this sentence, これ is the requested item; the exact item is not specified. The small word を marks これ as the object of the request. The pattern これを therefore means “this” as the thing being given or handed over. ください is a polite request expression. After an object marked with を, the reusable pattern Nをください means “Please give me N.” Here, ください does not itself specify a numerical quantity; it makes the request polite. It is related to the honorific verb くださる, “to give to me/us,” but in this pattern learners can use ください as the established request form. Together, これをください means “Please give me this.” The demonstrative identifies the requested item, を marks that item as the object, and ください politely requests that it be given to the speaker. This is a concise, polite way to ask for an indicated item.

6. これを取ります。

   I will take this.

   これ

   this

   取ります

   will take

   More detail

   これ means “this,” referring to an item identified as relatively near the speaker or otherwise presented as the current item. As a standalone demonstrative pronoun, it can refer to an item without naming the noun. Before a noun, the related form is この: この本 means “this book.” 取ります is the polite form of 取る, “to take.” The ending ます marks polite non-past speech; here, with the fixed translation, it expresses the speaker’s intention to take the item. The same non-past form can describe a present or habitual action in other contexts, so ます alone does not always mean future time. Example: 荷物を取ります。 means “I will take the luggage.” The particle を marks これ as the direct object of 取ります. Together, これを forms “this” as the thing being taken, and 取ります supplies the polite action. The complete utterance means “I will take this.”