Practise this grammar point with a scored quiz, sentence exercises and writing tasks—all with explanations or review guidance.
Start with the quick check or choose the set that fits your goal.
Start here or choose any challenge. Your quiz scores stay on this device.
Use so before an adjective or adverb: so clear, so clearly. Use such before a noun phrase: such a clear explanation. With much, many, little or few expressing quantity, use so.
| Use | Example | Why it works |
|---|---|---|
| Adjective | The desk is so small. | So directly modifies small. |
| Adverb | He explained it so clearly. | So modifies the manner adverb clearly. |
| Singular countable noun | It is such a small desk. | Keep a/an inside a singular countable noun phrase. |
| Plural or uncountable noun | Such useful notes. / Such useful information. | There is no a/an before these plural or uncountable nouns. |
| Quantity | So many notes. / So much information. | Use so, not such, before many or much in this quantity pattern. |
Check: It was so a useful lesson.
Use: It was such a useful lesson.
Use such + a/an + adjective + singular countable noun. Without the noun, write The lesson was so useful.
Read the example and explain the choice before answering. After the exercise, write a new sentence using the same pattern. Revisit any answer you could not explain, even if you guessed correctly.
4 sets · 40 exercises · about 50–70 minutes with writing and review.
10 scored questions, 20 sentence exercises and 10 writing challenges. Time depends on your pace. Start with the quiz or choose the practice you need.
Your scored quiz and self-reviewed exercises are tracked separately on this device.
Questions 1–5 build confidence; 6–10 check transfer and detail. Use Practice for feedback after each answer, or Test yourself to check at the end.
10 questions · 10 XP per correct answer · explanations included
so. Clear is an adjective without a following noun, so the pattern is so clear.
such a. Example is a singular countable noun. The complete noun phrase is a useful example, introduced by such.
so. Quietly is an adverb describing spoke. So modifies the adverb.
so / so. Use so before both many and much in quantity expressions: so many messages; so much noise.
such. Advice is uncountable. Use such helpful advice without a or an; so helpful advice does not fit this pattern.
such. Use such before a noun phrase: such an interesting talk.
so. Use so before an adverb such as quietly.
so. Use so with many, much, few and little when expressing this degree.
such. Such modifies the adjective plus plural noun phrase helpful people.
The room was so cold that we wore coats.. So modifies the adjective cold; there is no following noun phrase requiring such.
Complete the missing words, then compare the expected form. More than one natural answer may be possible; use the cue and explanation.
so
The suitcase was so heavy that I needed help.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
It was such a heavy suitcase that I needed help.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
She answered so quickly that I missed it.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
They were such friendly neighbours.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
We had so much work that we stayed late.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
There were so few seats that some people stood.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
It was such an exciting match.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
He spoke so softly that we moved closer.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
They have such useful advice.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
I had so little time that I skipped lunch.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
Complete the missing words, then compare the expected form. More than one natural answer may be possible; use the cue and explanation.
so
The story was so funny that everyone laughed.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
It was such a funny story that everyone laughed.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
There were so many messages that I couldn’t read them all.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
She is such a patient teacher.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
The children ran so fast that we lost sight of them.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
We had such bad weather during the trip.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
The room was so dark that I needed a torch.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
These are such comfortable shoes.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
so
He felt so tired that he went straight to bed.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
such
It was such an unusual idea that we discussed it for hours.
So modifies adjectives/adverbs and occurs with many/much/few/little. Such modifies a noun phrase; singular countable nouns need a/an.
Write an original answer for each task. Review the guidance to check your work. These are self-review tasks, not automatic grammar grading.
Your wording can vary.
Use so + adjective + that clause.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use such a/an + adjective + noun + that clause.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use so with an adverb.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use such + adjective + plural noun, without a/an.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Do not add a/an before an uncountable noun.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use so many, not such many.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use so little time.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Add a suitable noun and article while preserving the result.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Remove the noun phrase where appropriate and retain a complete clause.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Your wording can vary.
Use so beautiful or such a beautiful day, depending on the structure.
Check both the form and the meaning. If you are unsure, compare the lesson explanation before marking this exercise reviewed.
Print this lesson’s original questions with a separate answer key. Use the worksheet for another round without looking at the explanations.
Try these two tasks before opening the answers. They practise explanation and writing; they do not change your quiz score.
Repair: It was so a helpful example.
It was such a helpful example. Use such with the noun phrase a helpful example; use so with the adjective alone: The example was so helpful.
Describe a clear explanation with so, then express the same idea with such.
The explanation was so clear that I understood. It was such a clear explanation that I understood. The noun phrase requires such a.
Other wording may be correct. Compare the meaning and verb pattern, not just the words.
Say what exceeds a limit, what is sufficient and what is missing.
Say the same thing in two ways. Start with “The explanation was so clear that…” Then begin your second version with “It was such…” Keep the result the same.
The explanation was so clear that I could teach the rule to a friend. It was such a clear explanation that I could teach the rule to a friend. Adding the noun explanation changes so clear to such a clear explanation.
Choose the time you have. These are suggested study plans, not timers.
Answer the ten-question quiz. Read the explanation for each mistake before trying again.
Take the scored quiz →30 MINComplete the warm-up, then sets 2 and 3. Compare your answers and correct the patterns you missed.
Open sentence practice →60 MINWork through all four sets. Spend the final part writing, comparing and improving your own sentences.
Explore all four sets →Open the question that matches where you got stuck.
Look at what follows. Use so + adjective or adverb: “so helpful”; “so quickly”. Use such + noun phrase: “such a helpful guide”; “such helpful guides”. With a singular countable noun, keep a or an after such.
In quantity expressions, so modifies much, many, little or few: “so much work”; “so few mistakes”. Compare “such difficult work”, where such introduces a noun phrase with an ordinary adjective.
“I moved closer so that I could hear” gives a purpose. “It was so loud that I moved away” links a degree to a result. In the result pattern, an adjective or adverb follows so before the that-clause.
Yes, when little describes size: “such a little notebook”. When little describes a small quantity of an uncountable noun, use so little: “so little time”. Decide the meaning of little first.
Further reference: Cambridge Dictionary: such or so. Padworth examples and activities are original.
A fresh set of 10 questions with explanations. Continue when you are ready.
Next challenge: Connectors: link your ideas →