twice /twaɪs/ star5 CET4 TEM4

• 1.  

  ADV（副词） If something happens twice, it happens two times, or there are two actions or events of the same kind. 两次

  例：

  He visited me twice that autumn and called me on the telephone often.

  他那年秋天两次来看我，并经常给我打电话。

• 2.  

  ADV（副词） You use twice in expressions such as twice a day and twice a week to indicate that something happens two times in each day or week. 两次 [ADV 'a' n]

  例：

  I phoned twice a day, leaving messages with his wife.

  我一天打了两次电话，留言给他妻子。

• 3.  

  ADV（副词） If one thing is, for example, twice as big or old as another, the first thing is double the size or age of the second. People sometimes say that one thing is twice as good or hard as another when they want to emphasize that the first thing is much better or harder than the second. 两倍 [ADV 'as' adj/adv]

  例：

  The figure of seventy-million dollars was twice as big as expected.

  7千万美元这个数字是预计的两倍。

• 4.  

  PREDET（前置限定词） Twice is also a predeterminer. 两倍 [PREDET 'the' n]

  例：

  Unemployment here is twice the national average.

  这儿的失业率是全国平均数的两倍。

• 5.  

  PHRASE（习语） If you think twice about doing something, you consider it again and decide not to do it, or decide to do it differently. 三思

  例：

  From now on, think twice before saying stupid things.

  从现在起，说蠢话前要三思。

• 6.  

  （） once or twice →see once
• 7.  

  （） twice over →see over