English Idioms Used: 

Out of shape, under the weather, time heals all wounds, an apple a day keeps the doctor away, on top of the world 

1 - Out of shape

Definition: a person who is physically unfit or not in good physical condition.

Context (when to use this idiom): You would use the idiom "out of shape" when you want to describe someone's physical condition as being unfit, unhealthy, or not in good physical form due to a lack of regular exercise, poor lifestyle habits, or a period of inactivity. 

This phrase is commonly used to express that someone's overall fitness level has declined or that they are not in the same physical condition they used to be.

Example sentences:

1. After months of working long hours at the office, Pam found herself out of shape and struggling to climb a flight of stairs.

2. John used to be a competitive athlete, but after a year of minimal exercise, he was completely out of shape when he tried to play a casual game of basketball.

3. Feeling out of shape, Mary decided to start jogging every morning to improve her overall fitness level.

2 - Under the weather

Definition:  This idiom is used to describe someone who is not feeling well or is slightly sick. It's often used to explain a person's temporary state of illness or discomfort, usually not something serious.

Context (when to use this idiom): You would use the idiom "under the weather" when you want to convey that you or someone else is feeling slightly unwell, not in the best physical condition, or experiencing mild sickness. 

Example sentences:

1. I won't be able to make it to the party tonight; I'm feeling a bit under the weather and need to rest.

2. The children stayed home from school because they were both feeling under the weather with mild cold symptoms.

3. Mark didn't want to call in sick, but he was definitely feeling under the weather and couldn't focus on his work.

3 - Time heals all wounds

Definition: This idiom suggests that with the passage of time, emotional or psychological pain will eventually fade or lessen.

Context (when to use this idiom): You would use the idiom "time heals all wounds" when you want to convey the idea that with the passage of time, emotional pain, grief, or distress will eventually lessen or fade away. 

This expression is often used to comfort someone who is going through a difficult or traumatic experience, assuring them that their pain will become more manageable as time goes on.

Example sentences:

1. After their breakup, Jane was devastated, but as years passed, she found that time healed all wounds and she was able to move on.

2.  Losing his job was a tough blow for Mario, but over the course of several months, he began to feel better as time healed all wounds.

3. The passing of her beloved dog was heartbreaking, but gradually, the pain lessened as time healed all wounds.

4 - An apple a day keeps the doctor away

Definition: This idiom suggests that consuming apples regularly can contribute to good health and prevent illnesses, thereby reducing the need to visit the doctor. 

Context (when to use this idiom): You would use the idiom "an apple a day keeps the doctor away" when you want to emphasize the importance of maintaining a healthy lifestyle, particularly through a balanced diet and preventive measures. 

This expression suggests that consuming apples regularly can contribute to good health and possibly reduce the risk of illnesses, ultimately leading to fewer visits to the doctor.

Example sentences:

1. Camille’s mother always told her that an apple a day keeps the doctor away, so she makes sure to include apples in her daily diet.

2. Ivory believes in the saying "an apple a day keeps the doctor away" and makes sure to have an apple as a snack every afternoon.

3. The teacher told the students that an apple a day keeps the doctor away and then she gave them all an apple.

5 - On top of the world

Definition: This idiom is used to express a feeling of great happiness, success, or accomplishment. 

Context (when to use this idiom): You would use the idiom "on top of the world" when you want to convey a feeling of immense joy, happiness, accomplishment, or success. 

This expression is used to describe a moment when someone is experiencing a high level of positive emotions and feels like they are at the peak of their happiness or achievements.

Example sentences:

1. After receiving the promotion she had been working towards for years, Victoria felt like she was on top of the world.

2. Winning the championship match made the entire team feel on top of the world, celebrating their hard-earned victory.

3. Graduating with honors from university, Alex was on top of the world as he looked back on his years of dedication and effort.