倍数表現
着眼点「〜倍」は as … as の前に置く。語順は 倍数＋as＋原級＋as。
X times as 原級 as Y ＝ X times 比較級 than Y（Yの X 倍）
半分: half as … as（twice の 2倍は twice as … as）
例文
1
This room is twice as large as that one.
この部屋はあの部屋の2倍の広さだ。
2
The tower is three times as high as the building.
そのタワーはそのビルの3倍の高さだ。
3
The population of this city is half as large as that of Tokyo.
この市の人口は東京の半分だ。
ポイントthe＋名詞を使う型もある: This room is twice the size of that one.（倍数＋the size/length/height/weight of …）
確認問題
1
空所補充。この湖はあの湖の4倍の深さだ。This lake is ( ) ( ) ( ) ( ) that one.
答え
four times as deep as。倍数は as … as の前。