1. She is bargaining with the street vendor over the price.
她與街頭小販講價錢。
還能這樣說：
She is negotiating price with the street vendor.
She is dickering with the street vendor.
應用解析：
big bargain 便宜貨；
drive a hard bargain （在某事上）極力討價還價，堅持苛刻的原則
2. I'd take it if you reduce it to twenty Yuan.
如果20元錢的話我就買。
還能這樣說：
I will buy it if it's 20.
I'd take it for twenty Yuan.
應用解析：
take us as you find us 我們就這樣，請你將就些吧；
take sb. wrong 誤解某人的意思；
take sb. unawares 使某人出其不意，攻其不備；
take out of 取出，除去，要賠償，報酬
3. How about fifty Yuan?
50元錢怎么樣？
還能這樣說：
Can I get it for fifty Yuan?
Is it possible for fifty Yuan?
4. I'd buy this if it were cheaper.
再便宜一點我就買。
還能這樣說：
I'll take this if you come down a little.
I'd buy this if you reduce the price a little.
應用解析：
a best buy 最合算的買賣；
on the buy 買勢很旺；
buy off 收買，賄賂；納款以免軍役；
buy over 收買；行賄；大量收購