Looking for 100% textbook-authentic solutions for DAV Class 6 English Practice Book Unit 9: Conditionals? This comprehensive guide provides step-by-step solutions for every worksheet from Worksheet 1 to Worksheet 5 and Do It Yourself, covering Zero Conditionals (facts and scientific laws) and First Conditionals (real future possibilities) with clause matching and sentence transformations.
Structure of Conditional Sentences:
A conditional sentence consists of two clauses: the If-clause (Condition) and the Main clause (Result).
• Zero Conditional (General Truths): If + Simple Present, Simple Present.
• First Conditional (Possible Future): If + Simple Present, will / can / may + base verb (V1).
Worksheet 1: Zero Conditional (Facts & Scientific Truths)
Complete the scientific facts using Zero Conditional (Simple Present in both clauses):
1. If you heat (heat) ice, it melts (melt) into water.
2. If water reaches (reach) 100 degrees Celsius, it boils (boil).
3. If you mix (mix) blue and yellow paints, you get (get) green color.
4. Plants die (die) if they do not get (not / get) sufficient sunlight and water.
5. If oil is poured (pour) on water, it floats (float) on the surface.
Worksheet 2: First Conditional (Real Future Possibilities)
Fill in the blanks using First Conditional (If + Simple Present, will + base verb):
1. If it rains (rain) heavily tomorrow, the cricket match will be cancelled (cancel).
2. If you work (work) hard consistently, you will secure (secure) an ‘A’ grade.
3. She will miss (miss) the school bus if she does not wake up (not / wake up) early.
4. If they invite (invite) us with love, we will attend (attend) their function.
5. The doctor will examine (examine) you if you reach (reach) the clinic on time.
Worksheet 3: Matching ‘If Clauses’ with ‘Main Clauses’
Match each condition with its logical outcome:
| If Clause (Condition) | Main Clause (Result) | Complete Conditional Sentence |
|---|---|---|
| If you save money regularly | you will be able to buy a new bicycle. | If you save money regularly, you will be able to buy a new bicycle. |
| If you eat balanced food | you will maintain excellent health. | If you eat balanced food, you will maintain excellent health. |
| If you touch a hot stove | you will burn your fingers. | If you touch a hot stove, you will burn your fingers. |
| If we plant more trees | our city will become green and pollution-free. | If we plant more trees, our city will become green and pollution-free. |
Worksheet 4: Situational Sentence Construction
Construct meaningful First Conditional sentences based on the given environmental prompts:
1. Prompt: Turn off tap while brushing âž” Save gallons of water
âž” If you turn off the tap while brushing, you will save gallons of fresh water.
2. Prompt: Use cloth bags âž” Reduce plastic pollution
âž” If we use cloth bags for shopping, we will reduce hazardous plastic pollution.
3. Prompt: Switch off lights when leaving room âž” Conserve electricity
âž” If you switch off lights when leaving the room, you will conserve electricity.
Worksheet 5 / Do It Yourself: Sentence Transformation with ‘Unless’
Rewrite the conditional sentences using ‘Unless’ (Remember: Unless = If not):
1. If you do not exercise daily, you will not stay fit.
âž” Unless you exercise daily, you will not stay fit.
2. If she does not hurry up, she will miss the school assembly.
âž” Unless she hurries up, she will miss the school assembly.
3. If they do not apologize for their mistake, the teacher will punish them.
âž” Unless they apologize for their mistake, the teacher will punish them.
4. If we do not conserve wildlife, many rare species will become extinct.
âž” Unless we conserve wildlife, many rare species will become extinct.
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