kept to her bed的用法和样例：
- She was obliged to keep to her bed because of a fever.
- Mother had to keep to her bed for two weeks after her operation.
- She is the kind of person who will keep to her bed for the slightest indisposition.
- Beyond the wall lay Mr Ibbs's sister, who was kept to her bed: she often woke with the horrors on her, shrieking.
- Miss Fairlie kept to her room all day.
- She's nearly 90 and mostly keeps to her room.