Advanced Adverbial Clauses
Distinguish what you intended, what you prepared for and what actually followed.
Created by Denis M., British English teacher.
Your goal: Use purpose, precaution and result clauses precisely, controlling the subject, time reference and strength of the claim.
Read, try each short Say it task aloud, then compare with a model. Finish with the mastery quiz.
Use the lesson together. Pause at each Say it task for a brief exchange, then continue to the mastery quiz.
1. Purpose: what was the intention?
A purpose clause explains an intended goal. It does not, by itself, prove that the goal was achieved.
SO THAT / IN ORDER THAT + clause
We opened the room early so that the technician could test the equipment.
The clause has its own subject, the technician, and a finite verb phrase, could test. In order that is a more formal alternative.
IN ORDER TO / SO AS TO + infinitive
We arrived early in order to prepare the room.
The understood subject of prepare is we. With a different intended actor, keep a clause that names that actor.
Modals often fit the time and intention: I am sending notes so that you can prepare; I sent notes so that you could prepare. Will and would also occur where the intended future outcome is in focus. Choose the meaning and time reference, not an automatic replacement rule.
Negative purpose: She set an alarm so as not to miss the briefing. Use in order not to or so as not to. With a finite clause: She set an alarm so that she would not miss it.
Keep the intended actor
“I left instructions so that the assistant could finish the task.” A direct change to “I left instructions in order to finish the task” makes I the understood person finishing. Keep the original clause if the assistant is the intended actor.
Listen: an intention, a precaution and a result
Identify why an action was planned, what possible problem it prepared for, and what actually happened. A plan or precaution does not prove that its hoped-for outcome occurred.
Amanda · American English. Focus on the relationship between the clauses and the time of the situation.
Model transcript and listening guidance
A project briefing: We opened the room early so that we could test the equipment. We saved an offline copy in case the connection failed. The instructions were so clear that everyone could follow them.
Purpose, precaution and result: She set an alarm so as not to miss the briefing. Take a charger in case you need it. It was such a useful session that we arranged another one.
Listening guidance: So that we could test it gives the purpose. In case the connection failed gives a precaution. So clear that everyone could follow it gives a result. So as not to miss it expresses a negative purpose.
2. Precaution: prepare for a possibility
IN CASE: act in advance
Take a charger in case you need it.
Take it now, as a precaution. You may need it later.
IF: make the action conditional
If you need a charger, ask at reception.
Asking depends on the need arising. This is a condition for the action.
In an ordinary future precaution, use a present form after in case: Save a copy in case the connection fails. In a past account: We saved a copy in case the connection failed. The past form places the possible problem within that past situation; it does not assert that the connection failed.
In case of + noun is a different construction, common in instructions: In case of fire, use the stairs. Here it means if that event occurs. Do not read it as advice to use the stairs now merely as a precaution.
Check the sequence
“I wrote down the address in case my phone battery died.” What happened first? The address was written down before a possible later battery failure. The sentence does not tell us whether the battery actually died.
3. Result: degree leads to an outcome
| Pattern | Example |
|---|---|
| so + adjective / adverb + that | The instructions were so clear that everyone could follow them. |
| such + a/an + adjective + singular countable noun + that | It was such a useful session that we arranged another one. |
| such + adjective + plural / uncountable noun + that | They gave such clear instructions that nobody needed help. |
| so + many / few / much / little + noun + that | We had so little time that we postponed the discussion. |
So introduces degree with an adjective or adverb. Such works with a noun phrase. Before many, few, much and little meaning quantity, use so.
Compare so little time, a small amount, with such a little room, a physically small room. Identify what little means before applying the pattern.
Read the whole claim. “The session was so useful that we arranged another one” reports the arrangement as a result. “The instructions were so clear that everyone could follow them” expresses the resulting ability. Do not automatically strengthen could follow into did follow every step.
4. Remove ambiguity without changing the claim
So that can express purpose or result. Context, verb forms and punctuation help, but a comma alone is not a reliable test.
| Meaning | Clear version |
|---|---|
| Intended benefit | We changed the layout in order to make the instructions easier to follow. |
| Precaution | We kept the old version in case a problem arose. |
| Reported result | We changed the layout, with the result that fewer users asked for help. |
In the first sentence, making the instructions easier was the aim. The third sentence explicitly reports an observed outcome. Rewriting one as the other would change the evidence being claimed.
Advanced editing checklist: identify the relationship, preserve who does each action, keep the time reference, and check whether the original states an intention, a possibility, an ability or an event.
One form, more than one reading
“We moved the screen so that everyone could see it.” This may explain the purpose of moving it, or describe the resulting visibility. For a precise report, write We moved the screen in order to make it visible to everyone for the intention, or We moved the screen, with the result that everyone could see it for the outcome.
This lesson develops purpose, precaution and result. Use the related contrast lesson to review although, despite and other concessive patterns separately.
Repair and explain
Try each repair aloud or in writing before opening the answer.
Preserve the assistant as the person doing the checking: “I sent the file early in order to check it before the meeting.”
Check the repair
I sent the file early so that the assistant could check it before the meeting.
The original infinitive normally has I as its understood subject. A finite purpose clause lets you name the different actor.
Repair the result pattern: “It was so a useful session that we arranged another one.”
Check the repair
It was such a useful session that we arranged another one. / The session was so useful that we arranged another one.
Use such before a useful session, a noun phrase, or so directly before the adjective useful.
Make this an advance precaution: “Save the instructions if you need them later.”
Check the repair
Save the instructions in case you need them later.
In case tells the learner to save them now to prepare for a possible later need. If makes saving conditional on that need.
Mastery quiz
Choose one answer for each question. Check your answers, read the explanations, then retry any you missed.
Full answer key with explanations
- Your preparation was the intended benefit. So that you could prepare explains the intention behind sending the questions.
- We opened the room in order that the technician could test the equipment. The finite clause retains the explicitly named technician and the original purpose.
- so as not to. So as not to is a standard negative purpose infinitive.
- Save a copy in case the connection fails. Saving now prepares for a possible later failure.
- The notes were printed as preparation for a possible failure. In case presents the possible failure as the reason for a precaution.
- such. Such introduces clear instructions, a plural noun phrase.
- so. The quantity pattern is so little + uncountable noun + that.
- We revised the guide, with the result that fewer users asked for help. With the result that explicitly introduces the reported outcome.
- Its clarity made it possible for everyone to follow it. This preserves could as resulting ability or possibility.
- if a fire occurs. In case of + event noun commonly means if that event occurs.
Put it into practice
Write a 90–120-word account of preparations for a workshop. Include a purpose with a different subject, a precaution, a negative purpose, and an observed result using so or such. End by separating one intended benefit from what the evidence actually showed.
Self-check: Underline each relationship. Check the intended actor, time reference, negative purpose form, and so/such pattern. Does the precaution avoid claiming that the possible problem occurred?
Together: Your tutor asks one follow-up question. Answer it, then improve one of your sentences.
Compare with a model
We sent the instructions early so that participants could prepare questions. I saved an offline copy in case the connection failed, and I set a reminder so as not to miss the opening session. The first demonstration was so useful that several participants requested another example. We intended the new format to make everyone more confident, but the feedback only showed that most participants found the steps clearer. It did not measure confidence directly. Next time, we will ask a specific question about confidence in order to assess that aim more carefully.