Follow Rules and Give Advice: Helping Verbs “Must, Should” for Class 3

This Grade 3 worksheet introduces the helping verbs *must* and *should*, used to express strong rules, responsibility, or good advice. With practice activities like underlining, blanks, multiple-choice questions, corrections, and image-based writing, learners build clarity in when to follow or recommend actions.

Why Helping Verbs “Must, Should” Matter in Grammar?

These helping verbs show what is required versus what is suggested. For Grade 3 learners, they are important because:

1. “Must” shows strong obligation or rules.

2. “Should” gives advice or recommendations.

3. They improve clarity and purpose in writing.

4. They prepare students to express guidance and rules politely and correctly.

What’s Inside This Worksheet?

This worksheet includes five structured grammar exercises focused on real-life use of *must* and *should*:

🧠 Exercise 1 – Underline the Helping Verbs

Students underline *must* or *should* in each sentence (10 sentences) to identify usage.

✏️ Exercise 2 – Fill in the Blanks

Students insert *must* or *should* to complete rule- or advice-based sentences accurately.

📋 Exercise 3 – Multiple Choice Questions

Each sentence offers two choices (*must/should*). Students select the helping verb that fits best based on the strength of the situation.

📝 Exercise 4 – Rewrite the Sentences

Learners replace incorrect modals like *may*, *might*, or *could* with *must* or *should*, rewriting and underlining the corrected verb

🎨 Exercise 5 – Picture-Based Sentence Writing

Based on a street-crossing picture (page 8), students write five sentences using *must* or *should* to show rules and safety advice

✅ Answer Key (For Parents & Educators)

Exercise 1 – Underlined Helping Verbs

1. must

2. must

3. should

4. must

5. should

6. should

7. must

8. should

9. must

10. should

Exercise 2 – Fill in the Blanks

1. must

2. should

3. should

4. must

5. must

6. should

7. should

8. should

9. should

10. should

Exercise 3 – MCQ Answers

1. b) Should

2. a) Must

3. a) Must

4. a) Must

5. b) Should

6. b) Should

7. b) Should

8. b) Should

Exercise 4 – Rewritten Sentences with Underlined Helping Verbs

1. You **should** do your homework.

2. We **should** speak politely.

3. She **must** pack her bag.

4. He **must** wash his hands.

5. They **must** wear their uniforms.

6. I **should** finish my food.

7. We **must** keep our room clean.

8. You **should** be kind to others.

9. He **must** bring his book.

10. She **should** tie her hair.

Exercise 5 – Sample Picture-Based Sentences (Page 8 - Children at pedestrian crossing)

1. We **must** wait for the green signal.

2. Children **should** cross at the zebra crossing.

3. You **must** look both ways before crossing.

4. We **should** hold hands while crossing the road.

5. Pedestrians **must** follow traffic rules.