Small words can set important limits on a sentence. “If” introduces a condition. “Unless” identifies an exception. “May” can express possibility or permission, depending on its context. “Must” can express an obligation, or a conclusion in some sentences. Reading these words accurately helps us preserve the strength and scope of a statement.
For primary English learners in Punggol, a useful habit is to find the condition before repeating the main action. A sentence about what can happen under one condition does not necessarily describe what happens every time. Precise answers retain those boundaries.
Find the action and its condition
Consider an original practice notice for an invented school activity.
Practice notice: The reading session will take place outdoors if the ground is dry and the space is available. Unless the teacher announces a change, pupils should bring their books to the usual meeting point. Pupils may use the spare cushions, but the cushions must remain in the reading area. If the outdoor space is unavailable, the session may move indoors.
The first sentence links an outdoor session to both dry ground and an available space. It does not say that the session will always be outdoors. The second gives a usual instruction with an exception: bring books to the usual meeting point, except when the teacher announces a change.
The third sentence uses “may” for permission: using spare cushions is allowed. It uses “must” for a requirement: the cushions have to remain in the reading area. In the final sentence, “may move indoors” describes a possible change. It does not guarantee that an indoor move will happen.
The same word can perform different jobs. Read the surrounding sentence before assigning a fixed meaning to “may” or “must”.
Worked example: preserve the stated exception
Question: What should pupils do if the teacher has not announced a change to the meeting point?
The relevant sentence begins with “unless”. We can restate it as: If the teacher does not announce a change, pupils should bring their books to the usual meeting point.
A suitable answer is: They should bring their books to the usual meeting point. The question has already supplied the condition, so the answer can focus on the action. When restating the whole notice, however, retain the exception.
Question: Are pupils required to use the spare cushions?
No. “May use” gives permission; it does not make their use compulsory. A suitable answer is: No. Pupils are allowed to use the spare cushions, but they do not have to use them.
Question: Does the notice promise that an unavailable outdoor space will result in an indoor session?
No. The notice says the session “may” move indoors. A suitable answer is: An indoor session is possible if the outdoor space is unavailable, but the notice does not guarantee it.
A common mistake: weaken or strengthen the rule
A pupil may rewrite “The cushions must remain in the reading area” as “The cushions may remain there.” That changes a requirement into permission or possibility. The new sentence no longer tells pupils that taking the cushions elsewhere is prohibited by the notice.
Another pupil may rewrite “The session may move indoors” as “The session will move indoors.” This strengthens a possible event into a promised event. Correcting the grammar alone would not repair either change; the meaning has shifted.
When checking a rewrite, ask whether it preserves the same condition and the same strength. “Must stay” and “have to stay” can express the same obligation here. “Might move” can preserve the possibility expressed by “may move” in the final sentence. Suitable replacements depend on context.
Read “unless” without losing the exception
“Unless the room is closed, the club will meet there” can be understood as “If the room is not closed, the club will meet there.” The negative meaning belongs to the condition. Do not rewrite it as “If the room is closed, the club will meet there.” That reverses the instruction.
Read what the sentence establishes, and avoid inventing a replacement plan. If the room is closed, the sentence does not tell us where the club will meet. It gives an exception to using that room; another sentence would be needed to name a different venue.
Likewise, a condition often tells us what follows when it is met without explaining every alternative. “If the label is missing, ask the teacher” does not tell us that every labelled object is suitable for any use. Stay with the action and boundary stated in the text.
Fresh practice with explained answers
Here is another original notice for an invented classroom project.
Practice notice: Pupils may select a partner for the first planning task. Every pair must record both pupils’ names on its planning sheet. The group will use the larger table if it is available. Unless the teacher gives a different instruction, completed sheets should be placed in the blue tray. Some pairs may need more time to finish.
Question 1: Is selecting a partner compulsory?
No. “May select” gives permission in this context. The notice allows pupils to select a partner; that phrase alone does not require them to make the selection themselves.
Question 2: What is compulsory for every pair?
Every pair must record both pupils’ names on its planning sheet. Keeping “both” matters: writing only one name would not satisfy the stated requirement.
Question 3: Where should completed sheets go when there is no different instruction?
They should go in the blue tray. “Unless” introduces the possible exception, and the question tells us that the exception has not occurred.
Question 4: Will every pair definitely finish late?
The notice does not say that. It says some pairs may need more time. “Some” limits the group, and “may” limits the certainty. Changing either word would broaden the claim beyond the notice.
Use a two-part checking prompt
A useful parent prompt is: “What is the condition, and how certain or compulsory is the action?” Let the child underline the condition and circle the word that controls possibility, permission or obligation. Ask for a plain-language restatement that preserves both.
Conditions also matter when reading Science comparisons or a mathematical problem. English helps the learner retain phrases such as “under the same conditions” or “if the quantity stays fixed”, instead of turning a limited statement into an unrestricted claim.
Apply the habit in another subject
Retaining the stated conditions also helps with Mathematics problems. Continue with Separate Given Information from Assumptions.
Continue learning
Return to the English in Punggol study guide.
Related English practice: Literal Detail and Inference: Know What the Text Gives You · Paraphrasing: Change the Wording, Keep the Meaning.

