四級中五種倍數常見表示方法
1)、倍數＋形容詞/副詞比較級＋than
【例如】The girl is ten times cleverer than her brother.
2)、倍數＋as+形容詞/副詞/＋as
【例如】
His apartment is three times as large as that of mine. Americans eatas they actually need every day.
A) twice as much protein
B) twice protein as much twice
C) twice protein as much
D) protein as twice much
本題考查倍數的表達方法，正確形式應為：倍數＋as+形容詞/副詞/＋as，故答案為A.
3)、倍數＋名詞
【例如】The sun is many times the size of the moon.
4)、動詞＋倍數
【例如】The pants have shortened two times since they were bought.
5)、動詞+by+數詞/百分比/倍數
【例如】 The landlord wanted to raise the rent by a third. Between 1974 and 1997, the number of overseas visitors expanded 27%.
A) by B) for C) to D) in
本題考查動詞+百分比的表達方法，正確的連接詞為by，故答案為A.
