do someone a favor

例句：

1. 1.She loves to eat apples for breakfast everyday.
   她喜欢每天早餐吃苹果。
2. 2. Theapple tree is my favorite flowering plant.
   苹果树是我最喜欢的开花植物。
3. 3. Applesare a great source of fiber and vitamins.
   苹果是一种极好的纤维和维生素来源。