6．A new iPhone costs about _______ of a second-hand one．（　�。�
A．the price of three times
B．three times the price
C．as much as the three times price
D．three times more than the price

分析 在市場上一個(gè)新的iPhone的價(jià)格是一個(gè)二手的價(jià)格的三倍．

解答 答案：B
考查倍數(shù)被動(dòng)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"．本題使用的是第3種，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)+形容詞或副詞的比較級+than+B"，表示"A比B大（長、高、寬等）多少倍"．如：
　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"．

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