If you focus on what you've left behind, you’ll never be able to see what lies ahead.
如果你总是回首往事，你就看不到前途的光明。

发音词汇语法讲解
1.音标讲解
/aɪ/
behind,lies

2.语音技巧
连读：If-you, focus-on,lies-ahead
重读：focus,what,left,behind,never,able,see,what,lies,ahead
弱读：If,you,on,you’ve,you’ll,be,to,

3.英语口语词汇:
focous/'fokəs/集中、聚焦，focus on…

4.英语口语翻译：
做一件事，尽你所有的精力集中去做，并以正确的方式来做。
Do one thing, with all your focus and energy, and do it right.