高频词，一定要记得哦！
adv. 两次；两倍
We pay a bonus twice a year and we give three weeks holiday a year.
我们每年发两次奖金，放三周假。
The government has twice declined to back the scheme.
政府已两次拒绝支持该方案。
The figure of seventy-million pounds was twice as big as expected.
7,000 万英镑的金额是预期的两倍。
Women blink nearly twice as much as men.
女人眨眼是男人的两倍。
1.two times
I called her twice
2.to double the degree
she was doubly rewarded
his eyes were double bright
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1.Once bitten, twice shy.
一朝被咬，加倍小心。
2.She has a help in twice a week.
她雇了一个女佣,一周来做两次。
3.Once a man and twice a child
一次为成人,两度当小孩
4.Twice the coin came down tails.
硬币两次落下时都是反面朝上。
5.They had to fight with a force twice their numbers
他们必须与人数两倍于他们的军队作战。
好文推荐：问你们一个语法现象,请看下面这个句子：This dress is twice as expensive as that我有个问题：twice是修饰as吗,如果不是,而是修饰expensive,那被as隔开如何解释?_百度作业帮
问你们一个语法现象,请看下面这个句子：This dress is twice as expensive as that我有个问题：twice是修饰as吗,如果不是,而是修饰expensive,那被as隔开如何解释?
as 形容词 as...是短语,意思是“如...一样...”This dress is twice as expensive as that 这件裙子比那件贵两倍twice 是as...as...的修饰词.如果去掉twice,句子就是This dress is as expensive as that.这件裙子和那件一样贵.这么说懂了吗?}