你想買到便宜又實用的商品嗎？先來學學和賣家討價還價吧。

1. Hey, don't try to rip me off. I know what this is worth.
別想宰我，我識貨。

Rip someone off 意為某商店或商販企圖宰它的顧客。買東西最擔心被宰，行家都要先造出聲勢，用這句話鎮住賣家。如果真的被狠宰了一下，可以說，"I was ripped off ."或者"I was cleaned out."

The shop tried to rip me off, but I taught them a good lesson.
那個商店企圖宰我，結果讓我教訓了一頓。

2. Can you give me a little deal on this?
這能賣得便宜一點嗎？

Can you give me this for cheaper?
能便宜一點給我嗎？

3. Is there any discount on bulk purchases?
我多買些能打折嗎？

Give me a discount.
給我打個折吧。

Bulk purchases就是"大量地購買"，等于buy something in bulk。

"Discount"是折扣的意思，平時在商店里常出現的表示打折的牌子是on sale。專門賣廉價物品的商店叫bargain store，店里賣廉價商品的柜臺可以叫做bargain counter。

（來源：愛詞霸 編輯：許晶晶）