B2CEFRGrammar12 min

Compare and Contrast Phrases

Measurement and the metric system

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B2 Grammar • 12 Mins Topic: Measurement & Metric System

Compare and Contrast Phrases

Master how to show similarities, differences, and side-by-side comparisons clearly.

💡 How to use this lesson

For Teachers

Set a 12-minute timer for this lesson and guide students through the rule cards first.

Answer keys are validated automatically after students complete each practice item for quick checking.

For Learners

Read the four pattern rules and study the measurement examples carefully.

Complete the 12 interactive questions step-by-step and use the one-word hints when stuck.

📐 Grammar Patterns & Examples

Pattern 1

Unlike / In contrast to

Use these words when two things are different in one way. Put a comma after this phrase when you start your sentence with it.

• Unlike an old inch ruler, a metric tape uses a clear decimal scale.

• In contrast to a rough estimate, a standard gauge gives exact values.

• Unlike a ruler, a measuring tape can bend round a curve.

Pattern 2

Similar to / Similar

Use this phrase to show two things are almost the same. Always use the word to after it, never with or than.

• A standard litre is similar to a US liquid quart, but the volume is slightly bigger.

• When you convert the two units correctly, the final measurements stay similar.

• The new bottle is similar to the old one, but it is taller.

Pattern 3

Compared with / to / In comparison with

Use these phrases when you put two items side by side to talk about size or amount. A word like bigger or a number usually comes next.

• Compared with a tiny ounce, a kilogram is a much heavier weight.

• In comparison with a thin wire, this pipe has a much wider diameter.

• In comparison with an inch, a centimetre is a very small length.

Pattern 4

Differ from

Use this action word to say two things are not the same. Always place the word from right after it.

• Metric units differ from imperial units in their use of tens.

• The two standard rulers differ from each other in total length.

• The two cups differ from each other in shape.

⚠️ Watch out for these common errors!

  • ❌ Do not say similar with → Say similar to
  • ❌ Do not say differ to or differ than → Say differ from
  • ❌ Do not say compared than → Say compared with or compared to

Practice Tasks

Complete all 12 items below. Check the single-word hint in brackets if you need assistance.

Task 1 • Multiple Choice (opposite)

Choose the correct sentence:

____ a. Unlike an old gauge, the new tool measures in exact decimals. ____ b. Unlike to an old gauge, the new tool measures in exact decimals. ____ c. Unlike than an old gauge, the new tool measures in exact decimals.
Task 2 • Multiple Choice (likeness)

Choose the correct sentence:

____ a. A yard is similar with a metre in everyday use. ____ b. A yard is similar to a metre in everyday use. ____ c. A yard is similar than a metre in everyday use.
Task 3 • Multiple Choice (side-by-side)

Choose the correct sentence:

____ a. Compared than a litre, a millilitre is a tiny amount. ____ b. Compared with a litre, a millilitre is a tiny amount. ____ c. Compared from a litre, a millilitre is a tiny amount.
Task 4 • Sentence Rewrite (opposite)

Original: The old gauge is inaccurate, but the modern meter is consistent.

Rewrite the sentence starting with In contrast to:

____
Task 5 • Sentence Rewrite (side-by-side)

Original: A metre is long, but an inch is small.

Rewrite the sentence starting with In comparison with:

____
Task 6 • Sentence Rewrite (difference)

Original: Imperial measures are not the same as metric units in their structure.

Rewrite the sentence using the verb differ from:

____
Task 7 • Fill in the Gap (likeness)

The original estimate was ____ the final calculated weight.

Task 8 • Fill in the Gap (opposite)

____ traditional rulers, digital calipers show precise decimal figures.

Task 9 • Fill in the Gap (verb)

The two wire samples ____ from each other in gauge diameter.

Task 10 • Error Correction (preposition)
💬 "Hey! The two test measurements differ to each other in standard volume. What should we do?"

Type the correct phrase to fix the error in the message above:

____
Task 11 • Error Correction (preposition)
💬 "Hi Alex! The new digital scale reading is similar with the manual gauge result."

Type the correct phrase to fix the error in the message above:

____
Task 12 • Error Correction (side-by-side)
💬 "Note for lab report: Compared than an ounce, five grams is a very light measurement."

Type the correct phrase to fix the error in the message above:

____

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