Connectors of time are words and phrases we use to show when something happens. They connect two parts of a sentence and explain the time relationship between actions. In this guide you will find a full list, examples, common mistakes to avoid, and exercises.

They help us say if something happens before, after, at the same time, or over a period of time. Learning these connectors will help you speak and write more clearly in English.
How to use connectors of time
| Connector | Use | Punctuation | Example |
|---|---|---|---|
| before | earlier than something | comma if clause is first | Before we left, we checked the map. |
| after | later than something | comma if clause is first | After she finished work, she went home. |
| when | at a specific moment | comma if clause is first | When I arrived, they were eating. |
| while | during the same time (long actions) | comma if clause is first | While I was studying, he was watching TV. |
| as | at the same time (often for storytelling) | comma if clause is first | As I was walking, it started to rain. |
| until / till | up to a certain moment | usually no comma in middle | We stayed until the end of the movie. |
| since | from the past until now | comma if clause is first | Since I moved here, I feel happier. |
| once | after something happens (more formal) | comma if clause is first | Once you finish, call me. |
| as soon as | immediately after | comma if clause is first | As soon as he arrived, we started. |
| by the time | something is already completed before another moment | comma if clause is first | By the time we arrived, the film had started. |
Common mistakes with Connector of Time
1. Wrong punctuation with connectors
Use a comma only when the connector clause comes first.
Wrong:
When I arrived they were eating.
They were eating, when I arrived.
Right:
When I arrived, they were eating.
They were eating when I arrived.
2. Using future after time connectors
Don’t use will after time connectors.
Wrong:
When I will arrive, I will call you.
Right:
When I arrive, I will call you.
3. Mixing “while” and “when”
while = long action
Wrong:While I arrived, he left.
When I was reading, he was cooking.
when = short action / moment
Right:
When I arrived, he left.When I was reading, he was cooking.
4. Wrong structure after connectors
Use subject + verb.
Wrong:
Before to leave, call me.
Right:
Before you leave, call me.
Connectors of Time Exercises
More Exercises: EnglischHilfen | GrammarQuizzes | ToLearnEnglish |
