thesecretto後面加什麼

後面加名詞或者動名詞，例如：

1、The secret to happiness is to keep setting yourself new challenges.幸福的祕訣就是要不停地給自己設定新的挑戰。

2、The Secret to Raising Smart Kids培養聰明孩子的祕訣

3、The secret to eating less and being happy about it may have been cracked years ago — by McDonald's..吃的少還能感到幸福的祕訣可能早在幾年前就被麥當勞破解了。