Connectives tell the reader how ideas relate
“Because” introduces a reason. “So” can introduce a result. “Therefore” can signal a conclusion that follows from what has been stated. These words are useful only when the relationship itself makes sense. Adding a polished connective does not turn an unsupported explanation into a supported one.
For primary English learners in Punggol, cause-and-effect work strengthens comprehension answers and clearer writing. A pupil must identify what happened, which reason the passage provides and how the two fit together. Use everyday examples first, then extend the work when the learner is ready for more than one possible reason.
The aim is to explain a relationship accurately, rather than select a word simply because it sounds formal.
Work out the reason before writing the answer
Read this invented account.
The class planned to rehearse its presentation in the courtyard. A heavy shower began before the rehearsal. The teacher moved the chairs into the hall because the courtyard had become wet. The pupils rehearsed indoors. They could still use their display cards, but they left the large floor map rolled up because there was not enough space to spread it out.
Why did the class rehearse indoors?
A worked response is: “The class rehearsed indoors because the courtyard had become wet after the shower.”
The answer names the action and the stated reason. It does not say that the pupils disliked being outdoors, that the hall was cooler or that the presentation required a stage. Those details are not in the passage.
Why was the floor map left rolled up? “It was left rolled up because there was not enough space to spread it out.” The relevant reason belongs to that particular decision. The wet courtyard explains moving indoors; the lack of space explains leaving the map rolled up.
Put reason and result in either order
The same supported relationship can be expressed in different sentence patterns.
- The courtyard was wet, so the teacher moved the rehearsal indoors.
- The teacher moved the rehearsal indoors because the courtyard was wet.
- Because the courtyard was wet, the teacher moved the rehearsal indoors.
In the “because” sentences, the words following “because” name the reason. In the “so” sentence, the second clause names the result. The order changes, but the relationship remains.
When a sentence begins with a “because” clause, a comma helps mark where that opening clause ends. The sentence still needs a main clause to complete the thought. “Because the courtyard was wet” leaves the result unstated in this context.
“Therefore” can also connect the ideas across sentences: “The courtyard was wet. Therefore, the teacher moved the rehearsal indoors.” It signals a result or conclusion; it does not introduce an additional fact by itself.
A common mistake: joining both patterns at once
A pupil may write:
Because the courtyard was wet, so the teacher moved indoors.
In standard written English, this combines two linking patterns unnecessarily. A clear repair keeps one:
Because the courtyard was wet, the teacher moved indoors.
Or:
The courtyard was wet, so the teacher moved indoors.
The correction is not simply to delete a word blindly. Ask the pupil to identify the reason and result, then choose a complete pattern that expresses them.
Another mistake reverses the relationship: “The courtyard became wet because the teacher moved indoors.” That is a grammatical sentence, but it does not match the stated events. Grammar checks must include meaning.
Something happening first does not always cause what follows
Read these two sentences:
Noah sharpened his pencil. A few minutes later, the classroom bell rang.
The events have a stated order. They do not establish that sharpening the pencil caused the bell to ring.
A suitable connection is, “After Noah sharpened his pencil, the classroom bell rang.” An unsuitable claim is, “Noah sharpened his pencil, so the bell rang.” “After” describes timing; “so” presents a result.
This distinction matters in comprehension. A passage may record events without explaining why one occurred. If the reason is not provided, use the relevant evidence and avoid inventing a cause.
Sometimes a reason can be inferred from strong clues. State that inference carefully and identify the clues. A single preceding event is not automatically enough.
Distinguish a reason from a purpose
Compare these sentences:
- Lena moved the books because the shelf was wobbling.
- Lena moved the books to make space for a display.
The first gives a reason for the action. The second gives its intended purpose. A purpose says what the person hoped to achieve; it does not guarantee that the action achieved it.
If a pupil writes, “Lena moved the books, so the display was completed,” they add a result that was not stated. The books may have been moved in preparation while the display remained unfinished.
Read what the question asks: why an action happened, what someone intended, or what actually happened next. These questions can require different answers from the same passage.
Fresh practice: choose the supported connection
Read this original passage.
Amir took a poster to school in a paper sleeve. At the gate, he noticed that one corner of the sleeve had torn. He held the poster carefully by both sides. In the classroom, he asked for a larger sleeve because the old one no longer covered the poster fully. He put the poster into the new sleeve before carrying it to the hall.
Why did Amir ask for a larger sleeve?
Answer: “Amir asked for a larger sleeve because the old sleeve no longer covered the poster fully.” This uses the reason explicitly stated in the passage.
Which sentence is supported?
A. Amir put the poster into the new sleeve, so the poster won a prize.
B. Amir put the poster into the new sleeve before carrying it to the hall.
B is supported. A invents a prize and a causal connection. Neither is provided by the account.
Now join these ideas with “because”: “The old sleeve no longer covered the poster fully. Amir asked for a larger sleeve.”
One answer is, “Amir asked for a larger sleeve because the old sleeve no longer covered the poster fully.” Another is, “Because the old sleeve no longer covered the poster fully, Amir asked for a larger sleeve.” Both preserve the reason.
Check the strength of an explanation
In reading about an observation, quantities or repeated events, distinguish what the text records from the reason it establishes. “The values changed after the adjustment” describes a sequence. “The adjustment caused the change” makes a stronger claim and needs suitable support.
A useful parent prompt is, “Which words in the passage support this reason?” Ask the child to underline those words before composing the answer. Then reread the sentence with the chosen connective. Check that the reason has not become the result, that no new event has appeared and that the explanation answers the actual question. The connective should make a sound relationship visible.
Apply the habit in another subject
A causal explanation also needs relevant subject knowledge. Explore the Science guide on Heat and Cooling: Where Does Thermal Energy Go?.
Continue learning
Return to the English in Punggol study guide.
Related English practice: Select Textual Evidence That Answers the Question · Connect Evidence to a Clear Explanation.
For another exercise, try Follow Cause, Contrast and Sequence.
