Connectors of Time: Examples & Exercises

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.

Connectors of time infographic by ESL Inventory showing before, after, when, while, as, until, since, once, as soon as, and by the time with examples explaining time relationships in English sentences

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

ConnectorUsePunctuationExample
beforeearlier than somethingcomma if clause is firstBefore we left, we checked the map.
afterlater than somethingcomma if clause is firstAfter she finished work, she went home.
whenat a specific momentcomma if clause is firstWhen I arrived, they were eating.
whileduring the same time (long actions)comma if clause is firstWhile I was studying, he was watching TV.
asat the same time (often for storytelling)comma if clause is firstAs I was walking, it started to rain.
until / tillup to a certain momentusually no comma in middleWe stayed until the end of the movie.
sincefrom the past until nowcomma if clause is firstSince I moved here, I feel happier.
onceafter something happens (more formal)comma if clause is firstOnce you finish, call me.
as soon asimmediately aftercomma if clause is firstAs soon as he arrived, we started.
by the timesomething is already completed before another momentcomma if clause is firstBy 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

EXERCISE: Connectors of Time – Is it correct?

Decide if the sentences are correct or incorrect considering the use of each connector.

1 / 10

Decide if the sentence is correct:

She had left before I arrived.

2 / 10

Decide if the sentence is correct:

I will stay here until you will come.

3 / 10

Decide if the sentence is correct:

After he ate, he went to bed.

4 / 10

Decide if the sentence is correct:

When she will arrive, we will start.

5 / 10

Decide if the sentence is correct:

I will call you as soon as I arrive.

6 / 10

Decide if the sentence is correct:

He was cooking as she was cleaning.

7 / 10

Decide if the sentence is correct:

While I was studying, the phone rang.

8 / 10

Decide if the sentence is correct:

While I was playing outside my parents were working.

9 / 10

Decide if the sentence is correct:

Before I will leave, I will call you.

10 / 10

Decide if the sentence is correct:

After I finished my work, I went home.

Your score is

0%

EXERCISE: Connectors of Time – Complete the sentence

Complete the sentence with the correct connector, use the hint.

Sentence: ____ I arrived home, I took a shower.

Hint: later than something

Answer: After

1 / 10

I will text you  I arrive.

Hint: at that specific moment

2 / 10

she was a child, she loved animals.

Hint: from the past up to now

3 / 10

Stay here I come back.

Hint: up to a point in time

4 / 10

  I send the message, he will have left.

Hint: already completed before something

5 / 10

I’ve liked this band I was a teenager.

Hint: from the past up to now

6 / 10

he finished, he left.

Hint: immediately after

7 / 10

I had finished she started.

Hint: earlier

8 / 10

I went home the concert finished.

Hint: later than something

9 / 10

I was walking, I saw an accident.

Hint: as the same time

10 / 10

I will call you I get home.

Hint: at that specific moment

Your score is

0%

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