倍数表达法有三种：倍数＋原级倍数＋比较级倍数＋名词短语例如:和---三倍一样长1.threetimesaslongas2.threetimeslongerthan3.threetimesthelengthof再如：和---四倍一样宽1.fourtimesaswideas2.threetimeswiderthan3.threetimesthewidthof