3)倍數+名詞
??The sun is many times the size of the moon.
4)動詞+倍數
??The pants have shortened two times since they were bought.
5)動詞+by+數詞/百分比/倍數
??The landlord wanted to raise the rent by a third.
??Between 1974 and 1997, the number of overseas visitors expanded
??( )27%. (CET-4 2000,1)
??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.