only
音标： /ˈəʊnlɪ/
ADV You use only to indicate the one thing that is true, appropriate, or necessary in a particular situation, in contrast to all the other things that are not true, appropriate, or necessary. 只有
例：
Only the president could authorize the use of the atomic bomb.
只有总统能授权原子弹的使用。
A business can only be built and expanded on a sound financial base.
一家企业只有在稳定的财政基础上才能开办并扩大规模。
2.ADV You use only to introduce the thing which must happen before the thing mentioned in the main part of the sentence can happen. 只有…才
例：
The lawyer is paid only if he wins.
律师只有打赢官司才会被付费。
The Bank of England insists that it will cut interest rates only when it is ready.
英格兰银行坚持只有在它做好准备时才会降低利率。