价格和钱 (A1)

美国的钱分两部分。大的单位是 dollar，小的单位是 cent。一百个 cent 是一个 dollar，dollar 的符号是 $。

dollar 和 cent

• dollar /ˈdɑː.lər/ — ten dollars
• cent /sɛnt/ — fifty cents
• 试一试: Amina: How much is the shirt? - Lars: Twelve ___ and ninety cents. (dollars / cents / cards) 答案: dollars — ninety 后面已经有 cents 这个词了，一个价钱里同一个钱的单位不会出现两次。所以 twelve 是 twelve dollars，而 card 根本不是价钱。

How much is it?（多少钱？）

问一样东西多少钱，就说 How much is it? 回答写成 $4.50，读作 four fifty 或 four dollars fifty。

• How much is it? — How much is it? Four fifty.
• 试一试: Lars: ___ Camila: Twenty dollars. Lars 和 Camila 在卖手表的桌子旁。 (How much is it? / How old are you? / How are you?) 答案: How much is it? — Twenty dollars 是价钱，而价钱回答的是 How much is it? How old are you? 问的是 Camila，不是手表。

cheap 和 expensive

价钱低就是 cheap，价钱高就是 expensive。同一样东西，在这家店可能 cheap，在另一家店可能 expensive。

• cheap /tʃiːp/ — a cheap T-shirt
• expensive /ɪkˈspɛn.sɪv/ — an expensive bag
• 试一试: Ira: I have thirty dollars. - Maya: This jacket is ninety dollars. - Ira: Oh! It is very ___ for me. (expensive / cheap / new) 答案: expensive — 30 dollars 不够买 90 dollars 的夹克，所以对 Ira 来说是 expensive。她那声 "Oh!" 可不是对价钱满意，而 new 跟钱根本没关系。

用 card 付钱

付钱有两种方式。可以用手里的 dollar 和 cent 付，也可以用 card 付。

• card /kɑːrd/ — pay by card
• 试一试: Yasmin: That is nine dollars. - Diego: My wallet is empty today. I pay by ___. (card / cent / price) 答案: card — 钱包是空的，那就只能用 card 付钱。cent 是拿在手里的钱，而 Diego 今天手里没钱。price 是一个数字，不是付钱的方式。