A1 Imperatives & Instruction Language Grammar Test 2 – Academic English Foundations | IELTS TOEFL YDS
Practice imperatives and rule language using polite commands and academic safety notices with must, mustn’t, and have to. This A1 grammar test supports IELTS, TOEFL, and YDS preparation.
Choose the best answer (A, B, or C) to complete each classroom instruction, safety rule, or notice.
Focus on:
Imperative base form
Negative imperatives: Don’t / Please don’t
Group suggestion: Let’s / Let’s not
Rules: must / mustn’t / have to
Only one option is correct.
RESULTS
#1. Please don’t ___ during the briefing.
#2. ___ open the emergency exit unless there is a real danger.
#3. Let’s not ___ this step; it is essential for safety.
#4. You ___ wear safety glasses in the laboratory. (rule)
#5. Students ___ bring their ID cards to the exam room. (requirement)
#6. You ___ touch the chemicals without gloves. (prohibition)
#7. Please ___ the files with a clear name.
#8. ___ write on the desk; use the paper provided.
#9. Let’s ___ the instructions one more time.
#10. Please don’t ___ your phone during the exam.
#11. You ___ be quiet in the library. (general rule)
#12. Students ___ leave the room during the test. (forbidden)
#13. Let’s not ___ personal items on the laboratory table.
#14. You ___ bring food into the computer lab. (forbidden)
#15. Please ___ the warning sign carefully.
🧠 FULL TEACHING-LEVEL EXPLANATIONS (ALL 15)
🧩 1. Please don’t talk
Structural reason:
Please don’t + base verb.
Meaning logic:
Polite prohibition.
Rhetorical effect:
Formal classroom management.
Why others fail:
• talks = present simple
• talking = not imperative
Exam note:
“Please don’t…” appears in TOEFL classroom audio.
🧩 2. Don’t open the emergency exit…
Structural reason:
Negative imperative begins with Don’t.
Meaning logic:
Prohibition except in emergency.
Rhetorical effect:
Safety notice style (YDS).
Why others fail:
• doesn’t = he/she/it negative
• not alone = incomplete
Exam note:
Signs often use “Don’t + verb.”
🧩 3. Let’s not skip this step
Structural reason:
Let’s not + base verb.
Meaning logic:
Group instruction: “we should not skip.”
Rhetorical effect:
Collaborative but strict tone.
Why others fail:
• skips = present simple
• skipping = incorrect after let’s not
Exam note:
“Let’s not…” is common in lecture transitions.
🧩 4. You must wear safety glasses
Structural reason:
Must expresses obligation/rule.
Meaning logic:
Not optional.
Rhetorical effect:
Formal regulation.
Why others fail:
• mustn’t = prohibition, opposite
• don’t = imperative negative, not a modal rule
Exam note:
YDS loves must/mustn’t in notices.
🧩 5. Students have to bring ID cards
Structural reason:
Have to + base verb expresses requirement.
Meaning logic:
Administrative rule.
Rhetorical effect:
Institutional instruction.
Why others fail:
• has to = singular form (he/she/it)
• having to = not correct grammar for this sentence
Exam note:
Have to is common in TOEFL classroom announcements.
🧩 6. You mustn’t touch the chemicals without gloves
Structural reason:
Mustn’t = prohibition (not allowed).
Meaning logic:
Touching without gloves is forbidden.
Rhetorical effect:
Strong safety warning.
Why others fail:
• must = would mean you are required to touch (nonsense)
• have to = requirement, wrong direction
Exam note:
Mustn’t is stronger than “don’t” in formal rules.
🧩 7. Please save the files…
Structural reason:
Please + base verb.
Meaning logic:
Polite instruction.
Rhetorical effect:
Professional procedural style.
Why others fail:
• saves = present simple
• saving = not imperative
Exam note:
Computer-lab instructions are common in listening tests.
🧩 8. Mustn’t write on the desk
Structural reason:
Mustn’t expresses prohibition in rule language.
Meaning logic:
Not allowed.
Rhetorical effect:
Notice/regulation tone.
Why others fail:
• must = obligation to write (opposite)
• have to = requirement (opposite)
Exam note:
YDS frequently tests must vs mustn’t.
🧩 9. Let’s read the instructions…
Structural reason:
Let’s + base verb.
Meaning logic:
Group suggestion.
Rhetorical effect:
Instructor-led activity.
Why others fail:
• reads = present simple
• reading = incorrect after let’s
Exam note:
“Let’s + verb” is frequent in TOEFL lectures.
🧩 10. Please don’t use your phone…
Structural reason:
Please don’t + base verb.
Meaning logic:
Polite prohibition.
Rhetorical effect:
Exam-rule tone.
Why others fail:
• uses = present simple
• using = not imperative
Exam note:
Phone rules are common in modern exam instructions.
🧩 11. You must be quiet in the library
Structural reason:
Must expresses obligation.
Meaning logic:
Library rule.
Rhetorical effect:
Formal behavioral instruction.
Why others fail:
• mustn’t = would mean “you are not allowed to be quiet”
• don’t = incomplete without a main verb (don’t be)
Exam note:
Must + be + adjective is a common pattern.
🧩 12. Students mustn’t leave the room
Structural reason:
Mustn’t = forbidden.
Meaning logic:
Leaving during test is not allowed.
Rhetorical effect:
Strict policy tone.
Why others fail:
• must = obligation to leave
• have to = requirement
Exam note:
Exam-room rules frequently test this.
🧩 13. Let’s not put personal items…
Structural reason:
Let’s not + base verb.
Meaning logic:
Group instruction for lab cleanliness.
Rhetorical effect:
Collaborative safety culture.
Why others fail:
• puts = present simple
• putting = incorrect after let’s not
Exam note:
Imperatives often appear in lab protocols.
🧩 14. You mustn’t bring food…
Structural reason:
Mustn’t = prohibition.
Meaning logic:
Food is forbidden in the lab.
Rhetorical effect:
Policy and safety tone.
Why others fail:
• must = obligation to bring food (opposite)
• have to = requirement (opposite)
Exam note:
Sign-like rules love mustn’t.
🧩 15. Please read the warning sign carefully
Structural reason:
Please + base verb.
Meaning logic:
Polite instruction.
Rhetorical effect:
Safety compliance tone.
Why others fail:
• reads = present simple
• reading = not imperative
Exam note:
Warnings in IELTS reading often contain imperatives.
