Reasons and Results: Because, Because Of and So

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Reasons and Results: Because, Because Of and So

By the end: I can give a reason with a clause or a noun phrase and connect it to a result.

Created by , British English teacher.

I’m studying:

Try the activities, then check your answers.

Choose a short recording.

Before you start

Think of a change of plan. What caused it, and what happened as a result?

Useful background: Basic clauses, noun phrases, and/but/because.

Because introduces a clause

Put a subject and a finite verb after because. The reason can follow the result or come first. A fronted because clause normally takes a comma before the main clause.

We stayed inside because it was raining.

Because the train was late, I missed the start.

Because of introduces a noun phrase

Use because of before a noun phrase, a pronoun or an -ing phrase, not an ordinary subject-plus-finite-verb clause. A possessive can identify the source of the problem.

The match stopped because of the rain.

I found the answer because of your explanation.

Preserved lesson scene for We stayed inside because it was raining. People and essential props isolated on white.
We stayed inside because it was raining.Because introduces the reason in a full clause.

So introduces the result

Put the cause first and the result after so. In the standard linked sentences practised here, do not use both because and so for the same relationship. A short because answer can still be natural after a why question.

The road was closed, so we took another route.

I was tired, so I went home early.

A short because reply can borrow its context from the question

Why did you leave?Because I was tired.
What the question suppliesThe action: you left.

The listener already knows which result needs a reason.

What the reply suppliesThe reason: I was tired.

The because clause answers that question naturally.

In conversation, this is a useful short answer. When writing the complete linked sentence here, use I left because I was tired, rather than adding so to the same causal link.

Guided practice

Say or write your answer first. Compare the meaning and form; the model is one possible answer.

1. Complete: We left because ___ was getting late.

Compare a model and explanation

it

Because introduces the full clause it was getting late.

2. Complete: We left because ___ the noise.

Compare a model and explanation

of

The noun phrase the noise requires because of.

3. Join with so: The bus was cancelled. We walked.

Compare a model and explanation

The bus was cancelled, so we walked.

Cancellation is the cause; walking is the result.

4. Correct: We were late because of the train stopped.

Compare a model and explanation

We were late because the train stopped.

Use because before a subject and finite verb; another option is because of a train delay.

5. Rewrite with because of: The event ended early because the weather was bad.

Compare a model and explanation

The event ended early because of the bad weather.

Replace the reason clause with a noun phrase.

6. Correct the standard linked sentence: Because I was tired, so I left.

Compare a model and explanation

Because I was tired, I left.

Use one causal linking pattern, not both because and so for the same link.

7. Explain the direction: The room was full, so we waited.

Compare a model and explanation

The full room is the cause; waiting is the result.

Reversing the clauses would change the causal claim.

8. Someone asks Why did you leave? Is Because I was tired a natural spoken answer? Explain.

Compare a model and explanation

Yes. The question supplies the missing result, so the reason alone is a natural answer.

A contextually complete reply need not be a standalone written sentence.

A short conversation

Listen first if you can, then open the transcript when useful.

Open the conversation transcript

A: Why did you change the meeting room?

B: Because the first room was too noisy. There was a class next door.

A: Did everyone find the new room?

B: Yes. We put a sign on the door, so nobody got lost.

Listening checks

Listen to each extract or open its transcript. These three questions have their own score.

1. What caused the printer to stop?
Read the listening transcript

The printer stopped because it ran out of paper. We added more paper, so we could finish the handouts.

2. What was the result of the small room?
Read the listening transcript

We moved the picnic indoors because of the wind. The new room was small, so we used fewer tables.

3. Which noun-phrase version preserves the reason?
Read the listening transcript

I couldn’t hear the announcement because the people behind me were talking.

Preserved lesson scene for The road was closed, so we took another route. People and essential props isolated on white.
The road was closed, so we took another route.So introduces the result of the road closure.

Mastery quiz

Choose the best answer in each situation. Your score is out of eight.

1. Complete: The road closed because ___ heavy rain.
2. Complete: I called because I ___ a question.
3. Choose a correct cause-result sentence.
4. Which phrase can normally follow because of?
5. Which preserves We stayed because it was raining using because of?
6. In I forgot my key, so I waited outside, what is the result?
7. Which is a natural spoken reply to Why did you stop?
8. Which revision removes the double linker while preserving meaning? Because it was noisy, so we left.

Use it in your own words

Speaking task 1

Explain a fictional change of plan in three ways: because, because of and so.

Reveal a possible response

We moved indoors because it was windy. We moved indoors because of the wind. It was windy, so we moved indoors.

Success check: Change the structure without reversing the reason and result.

Speaking task 2

Describe a small problem and its solution using two cause-result links.

Reveal a possible response

My laptop battery was empty, so I borrowed a charger. I finished the work because my colleague helped me find a quiet place to sit.

Success check: Make each reason explicit and connect it to the correct result.

Speaking task 3

A partner mixes up cause and result. Clarify: We were late, so the bus broke down.

Reveal a possible response

That says our lateness caused the breakdown. The intended meaning is probably that the bus broke down, so we were late, or that we were late because the bus broke down.

Success check: Explain the changed causal claim rather than merely correcting a word.

Take it with you

I can give a reason with a clause or a noun phrase and connect it to a result.

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