Grammar exercise worksheet for correcting mistakes in sentences.
Worksheet titled "Correct The Mistakes" with 15 sentences for grammar correction practice, featuring a cartoon boy writing and colorful border.
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Show Answer Key & Explanations
Step-by-step solution for: Correct the mistakes worksheet - Free ESL printable worksheets ...
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Show Answer Key & Explanations
Step-by-step solution for: Correct the mistakes worksheet - Free ESL printable worksheets ...
Let's go through each sentence, identify the mistakes, and correct them. I'll explain the grammar rules behind each correction.
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1. Tom doesn't wants to clean his room today.
✘ Mistake: "doesn't wants" → Incorrect verb form after auxiliary "doesn't".
✔ Correct: *Tom doesn't want to clean his room today.*
📌 Explanation: After "doesn't", we use the base form of the verb (want), not the -s form.
---
2. Helen always is talking too much with her friends.
✘ Mistake: Word order — "always is" is incorrect. Adverbs like "always" usually come before the main verb.
✔ Correct: *Helen is always talking too much with her friends.*
📌 Explanation: In present continuous tense, adverbs of frequency like "always" go between the auxiliary verb ("is") and the main verb ("talking").
---
3. The boys play football in the yard yesterday.
✘ Mistake: Tense mismatch — "play" is present tense, but "yesterday" indicates past.
✔ Correct: *The boys played football in the yard yesterday.*
📌 Explanation: "Yesterday" requires simple past tense.
---
4. Who help you to do your homework every day?
✘ Mistake: Subject-verb agreement — "Who" is singular, so it needs "helps". Also, "to do" is unnecessary.
✔ Correct: *Who helps you do your homework every day?*
📌 Explanation: "Help" without "to" is more natural in this context. Also, "who" takes singular verb.
---
5. Tom had helped me to make a kite three days ago.
✘ Mistake: Past perfect ("had helped") is not needed here. "Three days ago" suggests simple past.
✔ Correct: *Tom helped me make a kite three days ago.*
📌 Explanation: "Three days ago" refers to a specific time in the past — use simple past, not past perfect.
---
6. Where did you lived in 2004?
✘ Mistake: "lived" should be base form after "did".
✔ Correct: *Where did you live in 2004?*
📌 Explanation: After auxiliary verbs like "did", use the base form of the verb.
---
7. The tasks was very difficult in the previous test.
✘ Mistake: Subject-verb agreement — "tasks" is plural, so it needs "were".
✔ Correct: *The tasks were very difficult in the previous test.*
📌 Explanation: Plural subject ("tasks") requires plural verb ("were").
---
8. Look! Bill catches a funny little pig in the yard.
✘ Mistake: Present simple "catches" doesn't match the exclamation "Look!" which suggests present continuous.
✔ Correct: *Look! Bill is catching a funny little pig in the yard.*
📌 Explanation: "Look!" signals an action happening now → use present continuous.
---
9. Your answer is very interested. I like it a lot.
✘ Mistake: "interested" is used for people; "interesting" describes things.
✔ Correct: *Your answer is very interesting. I like it a lot.*
📌 Explanation: "Interesting" = something that interests others; "interested" = someone who feels interest.
---
10. I haven't never visited this country.
✘ Mistake: Double negative — "haven't" and "never" together create a contradiction.
✔ Correct: *I have never visited this country.*
📌 Explanation: Use either "have never" or "haven't ever", but not both.
---
11. Sam stood at the bust stop when I see him yesterday.
✘ Mistake: Tense inconsistency — "stood" is past, but "see" is present.
✔ Correct: *Sam was standing at the bus stop when I saw him yesterday.*
📌 Explanation: Both actions happened in the past. "Was standing" shows ongoing action; "saw" is the completed action.
---
12. Liz will do her homework by three o'clock tomorrow.
✘ Mistake: Future time reference with "by" requires future perfect tense.
✔ Correct: *Liz will have done her homework by three o'clock tomorrow.*
📌 Explanation: "By" + future time → future perfect tense ("will have done").
---
13. Andrew already buy milk when I saw him yesterday.
✘ Mistake: Tense error — "buy" should be past perfect because it happened before "saw".
✔ Correct: *Andrew had already bought milk when I saw him yesterday.*
📌 Explanation: Action completed before another past event → use past perfect.
---
14. They just watched this awful film.
✘ Mistake: "just" is often used with present perfect, not simple past.
✔ Correct: *They have just watched this awful film.*
📌 Explanation: "Just" implies recent completion → use present perfect.
---
15. Mary always fall down because she was so absent-minded.
✘ Mistake: Mixed tenses — "fall" is present, but "was" is past. Also, subject-verb agreement issue.
✔ Correct: *Mary always falls down because she is so absent-minded.*
📌 Explanation: "Always" indicates a habitual action → present simple. "Is" matches present tense.
---
1. Tom doesn't want to clean his room today.
2. Helen is always talking too much with her friends.
3. The boys played football in the yard yesterday.
4. Who helps you do your homework every day?
5. Tom helped me make a kite three days ago.
6. Where did you live in 2004?
7. The tasks were very difficult in the previous test.
8. Look! Bill is catching a funny little pig in the yard.
9. Your answer is very interesting. I like it a lot.
10. I have never visited this country.
11. Sam was standing at the bus stop when I saw him yesterday.
12. Liz will have done her homework by three o'clock tomorrow.
13. Andrew had already bought milk when I saw him yesterday.
14. They have just watched this awful film.
15. Mary always falls down because she is so absent-minded.
Let me know if you'd like these explained further or turned into a worksheet!
---
1. Tom doesn't wants to clean his room today.
✘ Mistake: "doesn't wants" → Incorrect verb form after auxiliary "doesn't".
✔ Correct: *Tom doesn't want to clean his room today.*
📌 Explanation: After "doesn't", we use the base form of the verb (want), not the -s form.
---
2. Helen always is talking too much with her friends.
✘ Mistake: Word order — "always is" is incorrect. Adverbs like "always" usually come before the main verb.
✔ Correct: *Helen is always talking too much with her friends.*
📌 Explanation: In present continuous tense, adverbs of frequency like "always" go between the auxiliary verb ("is") and the main verb ("talking").
---
3. The boys play football in the yard yesterday.
✘ Mistake: Tense mismatch — "play" is present tense, but "yesterday" indicates past.
✔ Correct: *The boys played football in the yard yesterday.*
📌 Explanation: "Yesterday" requires simple past tense.
---
4. Who help you to do your homework every day?
✘ Mistake: Subject-verb agreement — "Who" is singular, so it needs "helps". Also, "to do" is unnecessary.
✔ Correct: *Who helps you do your homework every day?*
📌 Explanation: "Help" without "to" is more natural in this context. Also, "who" takes singular verb.
---
5. Tom had helped me to make a kite three days ago.
✘ Mistake: Past perfect ("had helped") is not needed here. "Three days ago" suggests simple past.
✔ Correct: *Tom helped me make a kite three days ago.*
📌 Explanation: "Three days ago" refers to a specific time in the past — use simple past, not past perfect.
---
6. Where did you lived in 2004?
✘ Mistake: "lived" should be base form after "did".
✔ Correct: *Where did you live in 2004?*
📌 Explanation: After auxiliary verbs like "did", use the base form of the verb.
---
7. The tasks was very difficult in the previous test.
✘ Mistake: Subject-verb agreement — "tasks" is plural, so it needs "were".
✔ Correct: *The tasks were very difficult in the previous test.*
📌 Explanation: Plural subject ("tasks") requires plural verb ("were").
---
8. Look! Bill catches a funny little pig in the yard.
✘ Mistake: Present simple "catches" doesn't match the exclamation "Look!" which suggests present continuous.
✔ Correct: *Look! Bill is catching a funny little pig in the yard.*
📌 Explanation: "Look!" signals an action happening now → use present continuous.
---
9. Your answer is very interested. I like it a lot.
✘ Mistake: "interested" is used for people; "interesting" describes things.
✔ Correct: *Your answer is very interesting. I like it a lot.*
📌 Explanation: "Interesting" = something that interests others; "interested" = someone who feels interest.
---
10. I haven't never visited this country.
✘ Mistake: Double negative — "haven't" and "never" together create a contradiction.
✔ Correct: *I have never visited this country.*
📌 Explanation: Use either "have never" or "haven't ever", but not both.
---
11. Sam stood at the bust stop when I see him yesterday.
✘ Mistake: Tense inconsistency — "stood" is past, but "see" is present.
✔ Correct: *Sam was standing at the bus stop when I saw him yesterday.*
📌 Explanation: Both actions happened in the past. "Was standing" shows ongoing action; "saw" is the completed action.
---
12. Liz will do her homework by three o'clock tomorrow.
✘ Mistake: Future time reference with "by" requires future perfect tense.
✔ Correct: *Liz will have done her homework by three o'clock tomorrow.*
📌 Explanation: "By" + future time → future perfect tense ("will have done").
---
13. Andrew already buy milk when I saw him yesterday.
✘ Mistake: Tense error — "buy" should be past perfect because it happened before "saw".
✔ Correct: *Andrew had already bought milk when I saw him yesterday.*
📌 Explanation: Action completed before another past event → use past perfect.
---
14. They just watched this awful film.
✘ Mistake: "just" is often used with present perfect, not simple past.
✔ Correct: *They have just watched this awful film.*
📌 Explanation: "Just" implies recent completion → use present perfect.
---
15. Mary always fall down because she was so absent-minded.
✘ Mistake: Mixed tenses — "fall" is present, but "was" is past. Also, subject-verb agreement issue.
✔ Correct: *Mary always falls down because she is so absent-minded.*
📌 Explanation: "Always" indicates a habitual action → present simple. "Is" matches present tense.
---
✔ Final Corrected Sentences:
1. Tom doesn't want to clean his room today.
2. Helen is always talking too much with her friends.
3. The boys played football in the yard yesterday.
4. Who helps you do your homework every day?
5. Tom helped me make a kite three days ago.
6. Where did you live in 2004?
7. The tasks were very difficult in the previous test.
8. Look! Bill is catching a funny little pig in the yard.
9. Your answer is very interesting. I like it a lot.
10. I have never visited this country.
11. Sam was standing at the bus stop when I saw him yesterday.
12. Liz will have done her homework by three o'clock tomorrow.
13. Andrew had already bought milk when I saw him yesterday.
14. They have just watched this awful film.
15. Mary always falls down because she is so absent-minded.
Let me know if you'd like these explained further or turned into a worksheet!
Parent Tip: Review the logic above to help your child master the concept of find the errors worksheet.
