Good news! The price of all those second-hand goods is ______ before.
A.30% as lower asB.30% lower than
C.lower 30% thanD.a(chǎn)s 30% low as
B

試題分析:考查倍數(shù)表達(dá)法。倍數(shù)表達(dá)有四種:1. “A+倍數(shù)+形容詞或副詞的比較級+than+B”, 2.“A+倍數(shù)+as+形容詞或副詞的原級+as+B”, 3. “A+倍數(shù)+the size/height/length/width, etc+of+B”, 4. “……times+what+從句”。在這四種表達(dá)中,都要把倍數(shù)放在最前面。本句中的30%也是倍數(shù),考查的是第1中方法。句意:好消息!所有這些二手商店的價(jià)格比以前低了百分之30.故B正確。
點(diǎn)評:倍數(shù)表達(dá)要牢記,倍數(shù)表達(dá)法是高中英語教學(xué)的重點(diǎn),也是歷屆高考的熱點(diǎn)。當(dāng)我們要表達(dá)甲是乙的幾倍時(shí),通常用句型來表示:
1. “A+倍數(shù)+形容詞或副詞比較級+than+B”,表示“A比B大(長、高、寬等)多少倍”
This rope is twice longer than that one. 這根繩子是那根繩子的兩倍長(比那根繩子長一倍)。
2.“A+倍數(shù)+as+形容詞或副詞的原級+as+B”,表示“A正好是B的多少倍”。如:
Asia is four times as large as Europe. 亞洲的面積是歐洲的四倍。
3. “A+倍數(shù)+the size/height/length/width, etc+of+B”,表示“A正好是B的多少倍”。如:
This street is four times the length of that one. 這條街是那條街的四倍長。
4. “……times+what+從句”。如:
The production is now three times what it was ten years ago. 現(xiàn)在的產(chǎn)量比十年前增加了兩倍。
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