When: meaning, definitions and examples

Used to refer to a specific time or occasion.

• I'll call you when I get home.
• She was happy when she heard the news.

Used to indicate that something happens immediately after another event.

• Call me as soon as you arrive.
• I will send the documents as soon as they are ready.

Used to refer to any time or every time something happens.

• You can come over whenever you want.
• Whenever it rains, I stay inside.

Used to specify a particular time or situation in which something happens. It marks the point in time.

• You can go play outside when you finish your homework.
• She feels happy when she listens to her favorite song.

Used to talk about two actions happening simultaneously for a period of time. Often emphasizes the ongoing nature of the first action.

• He was reading a book while eating breakfast.
• I listened to music while working on my project.

Used to indicate the manner or the reason why something happens. It can also show two events happening at the same time.

• You should take it as a compliment.
• She smiled as she read the letter.

Used to ask about the time at which something happens or to introduce a clause that describes the time an action occurred.

• When are you going to the store?
• Tell me when you finish your homework.

Used in formal or specific contexts to ask or state the exact time an event will happen or happened.

• At what time does the meeting start?
• Please tell me at what time you arrived.

Used to ask about the specific circumstance or event when something took place, often formal or official in nature.

• On what occasion did you meet the president?
• He only wears his tuxedo on special occasions.