介绍:
倍数常用的表达法：
公式1.倍数词（Half.double,,twice.two times,treblethree times,four times）+定冠词/所有形容词+名词
所有形容词（my, your, his, her, its, our, your,their）
I bought it at half the usual price.我用平常价格的一半买下它。
The salesman earns half my salary.这销售员的收入是我薪水的一半。
My brother owns double my books.我哥哥拥有的书是我的两倍。
That window is three times the size of this.那个窗子是这个窗子的三倍大。
I had to pay double (=twice) the usual fare.我不得不付平常车费的两倍。
公式2
…times as+形容词/.副词+as…
=…times （其实省略了of）the 名词+of+….
They have twice as many as ships as we have.
=They have twice the number of our ships.他们船的数量是我们的两倍。
He is twice a s old as you.他的年龄是你的两倍。
=He is twice your (own )age.
