About 110 million people moved to this city. The population is ____________ as ten years ago.
A.a(chǎn)s twice largeB.twice as large C.a(chǎn)s many twiceD.twice as many
B

試題分析:考查倍數(shù)表達(dá)法:這題使用的是:“A+倍數(shù)+as+形容詞或副詞的原級(jí)+as+B”,表示“A正好是B的多少倍”。句意:大約110百萬(wàn)的人搬到這個(gè)城市,人口是10年前的兩倍。選B。
點(diǎn)評(píng):倍數(shù)表達(dá)要牢記,倍數(shù)表達(dá)法是高中英語(yǔ)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(jí)+than+B”,表示“A比B大(長(zhǎng)、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(zhǎng)(比那根繩子長(zhǎng)一倍)。
2.“A+倍數(shù)+as+形容詞或副詞的原級(jí)+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(zhǎng)。
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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