列
列 means the line or queue in 「列が前に進んでいます。」. It names the group of people waiting, and you can reuse it with a location or action to talk about a line in a public place.
が
が marks 列 as the subject in 「列が前に進んでいます。」, showing what is moving forward. A common reuse pattern is 「Aが進む」 when A is the thing that moves forward.
前
前 means forward or the front in 「前に進んでいます。」. Together with に, it shows the direction of movement; a reusable pattern is 「前に進む」 for moving toward the front.
に
に marks the direction in 「前に進んでいます。」. Here it connects 前 with 進む to express movement forward, and the same directional pattern can be used with another destination.
進んで
進んで is the form used in 「進んでいます」 to say that the line is moving forward. It comes before います in this ongoing-action pattern, and 「前に進んでいます」 can be reused when something is currently moving ahead.
います
います completes 「進んでいます」 and shows that the movement is continuing now. This polite pattern can follow an action form to describe something happening at the time of speaking.
今
今 means now in 「今、前に進みましょう。」. It tells the listener when to move, and it can be placed before a request or suggestion about an action to do immediately.
進みましょう
進みましょう means let us move forward in 「今、前に進みましょう。」. It is a polite suggestion to move together, and 「前に進みましょう」 can be reused when guiding someone in a line or toward the front.
次
次 means next in 「次は私たちですか。」 and 「次は私たちの注文を受けてくれます。」. It identifies the next person, turn, or event, and 「次はAですか」 is a useful way to ask whether A is next.
は
は marks the topic in 「次は私たちですか。」. The question focuses on whether the next turn is ours, and the pattern 「AはBですか」 can be reused to ask about A’s status or identity.
私たち
私たち means we or us in 「次は私たちですか。」 and 「私たちの注文を受けてくれます。」. The form refers to the speaker and at least one other person, and it can be followed by の when describing something belonging or connected to the group.
です
です gives the polite statement form in the question 「次は私たちですか。」. With か, it asks whether the next turn is ours, and 「AはBです」 is a reusable polite identification pattern.
か
か marks 「次は私たちですか。」 as a question. Placed at the end of this polite statement, it asks for confirmation, and the same ending can be used after another polite question statement.
もうすぐ
もうすぐ means almost or soon in 「もうすぐです。」. It tells the listener that the expected moment is near, and it can stand before です when the specific event is clear from the conversation.
の
の connects 私たち with 一人 in 「私たちの前に一人います。」, making the phrase mean one person in front of us. A reusable pattern is 「Aの前」 for the front or space in front of A.
一人
一人 means one person in 「私たちの前に一人います。」. It counts a single person in the line, and it can be used with a location phrase to say that one person is there.
私
私 means I or me in 「私はカードを用意しています。」. Here it identifies the speaker as the person who has the card ready, and 「私はAを用意しています」 can be reused to say what the speaker has prepared.
カード
カード means card in 「私はカードを用意しています。」. It is the item being prepared for the order, and it can be used as the object of an action such as 用意する or 持つ.
を
を marks カード as the object in 「カードを用意しています。」. It shows what is being prepared, and a common reuse pattern is 「Aを用意する」 for preparing A.
用意
用意 means preparation in 「カードを用意しています。」. With しています, it describes preparing or having the card ready, and 「Aを用意する」 is a reusable pattern for getting A ready.
しています
しています completes 「用意しています」 and describes the speaker’s current state of having the card prepared. In this dialogue it follows 用意, and the pattern 「Aを用意しています」 can be reused when telling someone that A is ready.
それ
それ means it or that in 「それを手に持っていてください。」. It refers to the card already mentioned, and it can be used before を when the listener knows which object is meant.
手
手 means hand in 「手に持っていてください。」. With に, it identifies the place where the card should be held, and 「手に持つ」 is a reusable pattern for holding something in one’s hand.
持って
持って is the form used in 「持っていてください」 for holding or keeping something. It combines with いてください to make a polite request to keep holding it, and 「手に持っていてください」 can be reused when asking someone not to put an item down.
いて
いて is part of the request 「持っていてください」 and helps express continuing to hold the card. The whole pattern asks someone to keep an action or state in place, so it can be reused with another action when continued behavior is intended.
ください
ください makes 「持っていてください。」 a polite request. Here it asks the listener to keep holding the card, and it can follow a request form to ask someone politely to do something.
注文
注文 means an order in 「注文する準備ができています。」 and 「私たちの注文を受けてくれます。」. It refers to the food or drink request being made at the counter, and it can be used with する for placing an order or を受ける for receiving one.
する
する means do in 「注文する準備ができています。」, where 注文する means place an order. It follows the noun 注文 to form the action, and 「注文する」 can be reused when saying that someone is going to order.
準備
準備 means preparation in 「注文する準備ができています。」. It describes readiness for ordering, and the pattern 「Aの準備」 can be reused for preparation for another activity.
できて
できて is the form used in 「準備ができています」 to say that the preparation has reached a ready state. It comes before います in this polite expression of current readiness, and 「準備ができています」 can be reused when something is ready.
受けて
受けて is the form used in 「受けてくれます」 for receiving the order. It comes before くれます, which adds that the staff will do this for us, and 「注文を受けて」 can be reused when describing receiving an order.
くれます
くれます in 「私たちの注文を受けてくれます。」 shows politely that someone will receive our order for us. It follows the action form 受けて and can be reused when another person does something helpful for the speaker or the speaker’s group.