Adverb Clauses of Time

Time clauses are introduced by conjunctions such as when, while, before, after, as soon as, until, by the time, once, as. A critical rule: NEVER use a future tense (will) after these time conjunctions — use Present Simple to express future meaning.

Structure and Key Rule

Structure

time conjunction + present simple clause, main clause with will/future

When

When the manager arrives, we will start. (NOT: will arrive)

As soon as

As soon as the report is ready, I will send it.

Before/After

Please review the document before you submit it.

Until

We will wait until the client confirms.

By the time

By the time she returns, the project will be complete.

Time Conjunctions

whenwhileasbeforeafteras soon asonceuntilby the timewheneverthe momentaftersince

Example Sentences

As soon as the manager arrives, we will start the briefing.

Please complete the form before you submit your application.

When the audit is complete, we will publish the results.

I will call you as soon as I land.

Once the contract is signed, work will begin immediately.

She will not leave until all reports are filed.

By the time the new system is installed, the project will be underway.

While the team was reviewing the data, a critical error was discovered.

We will provide an update after the board meeting concludes.

The moment the deal is confirmed, notify the press office.

Common Mistakes

When the audit will be complete, we will publish the results.

When the audit is complete, we will publish the results.

NEVER use 'will' after time conjunctions (when, as soon as, before, etc.) — use Present Simple for future meaning.

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