three fourths running down clause

例句：

1. 1. The cake is threequarters of the way done.
   蛋糕已经烤了四分之三。
2. 2. Weneed to buy two thirds of the ingredients for therecipe.
   我们需要买食谱所需食材的三分之二。
3. 3. He has only eaten half of whathe ordered.
   他只吃了他点的饭菜的一半。