[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-page-en-substitution-with-do-so-so-and-not":3,"grammar-exercises-by-page-01a0e1ab-d60e-7755-901b-763344a63a75":25,"exercise-list-path-en-none":61},{"id":4,"title":5,"slug":6,"seoDescription":7,"content":8,"language":9,"level":10,"displayOrder":11,"grammarTopics":12,"createdAt":19,"updatedAt":20,"vocabularyLists":21,"primaryTopicHub":22,"readyImages":24},"01a0e1ab-d60e-7755-901b-763344a63a75","Substitution with Do So, So and Not","substitution-with-do-so-so-and-not","Use do so to replace actions and so or not to replace clauses, with clear reference, natural reporting patterns and appropriate formal or spoken style.","Substitution avoids repetition while keeping a clear link to earlier information. **Do so** replaces a verb phrase; **so** and **not** can stand for a whole clause. Choosing between them depends on meaning, the surrounding verb and register.\n\n## 1. What is being replaced?\n\nA substitute must have a clear *antecedent*: the earlier expression that supplies its meaning. Identify whether you are referring back to an action or to a proposition—something presented as true, possible or expected.\n\n| Substitute | What it replaces | Example |\n| --- | --- | --- |\n| **do so** | A verb phrase describing an action or event | Maya checked the figures, and Leo **did so** too. |\n| **so** | A clause expressing a proposition | “Are the figures accurate?” “I believe **so**.” |\n| **not** | The negative version of a proposition | “Will we need another audit?” “I hope **not**.” |\n\nIn the first example, **did so** means *checked the figures*. In the second, **so** means *that the figures are accurate*. In the third, **not** means *that we will not need another audit*.\n\n## 2. Using do so\n\nUse **do so** to refer back to an action or event without repeating its verb phrase. The form of **do** changes to fit the tense and grammatical structure; **so** stays unchanged.\n\n:::example\n- The editor promised to check the references and **did so** immediately.\n- Anyone wishing to withdraw their application must **do so** by Friday.\n- She apologised publicly. By **doing so**, she helped restore trust.\n- They were asked to destroy the records, but they may already **have done so**.\n:::\n\nThe subject does not have to remain the same. You can also add a contrasting time, manner or other circumstance:\n\n- Nina submitted her report on Monday; Omar **did so on Tuesday**.\n- The first team checked the equipment manually; the second **did so automatically**.\n\nHere, **do so** replaces the shared action, while the new expression supplies a different circumstance.\n\n### Actions, events and states\n\n**Do so** works most naturally with dynamic situations—actions or events—rather than states such as possession, knowledge or resemblance. The subject need not be human: *The first engine failed at noon; the second did so an hour later.*\n\n:::warning\nDo not use **do so** as a general replacement for any verb.\n\nUnnatural for the intended meaning: *Eva knows the answer, and Max does so too.*\n\nNatural: Eva knows the answer, and Max **does too**.\n\nThe second sentence uses auxiliary ellipsis, not **do so** substitution.\n:::\n\n## 3. Register and clear reference\n\n**Do so** is particularly useful in formal instructions, reports and carefully structured writing. It also occurs in speech, but **do it**, **do that**, or a shorter auxiliary construction may sound more conversational.\n\nCompare:\n\n- Formal instruction: If you wish to appeal, please **do so** within fourteen days.\n- Conversation: “Have you sent the email?” “Yes, I **have**.”\n- Reaction to an action: “I'm going to delete the backup.” “Don't **do that**!”\n\nThese expressions are not always interchangeable. **Do so** normally depends on an action or event already expressed in words. **Do it** and **do that** can also refer to an action evident from the situation.\n\n:::tip\nBefore using **do so**, expand it mentally. If the reader could recover two different actions, repeat the intended verb phrase instead.\n\nUnclear: The assistant promised to contact the client and revise the invoice. She **did so** that afternoon.\n\nClearer if only one action is intended: She **revised the invoice** that afternoon.\n:::\n\n## 4. So as a clause substitute\n\nAfter certain verbs, **so** replaces a clause rather than an action. Common patterns include **think so**, **believe so**, **suppose so**, **expect so**, **hope so** and **say so**.\n\n:::example\n“Has the deadline changed?”\n\n- “I **think so**.” — That is my opinion, but I am not certain.\n- “I **hope so**.” — I want the deadline to have changed.\n- “The coordinator **said so**.” — The coordinator stated that it had changed.\n:::\n\nThe verb still contributes its own meaning: belief, expectation, hope or a report. **So** does not make these responses equivalent.\n\nThis pattern is restricted to particular verbs. Do not assume that every verb followed by a *that*-clause can take **so**.\n\n- Natural: “Is she available?” “I **know she is**.”\n- Not standard for this meaning: “I **know so**.”\n\nA related reporting pattern places **so** first: *The road is closed, or **so I hear***. This attributes the information to a report rather than presenting it as direct knowledge.\n\n:::note\nDistinguish substitution from agreement and confirmation:\n\n- “I think **so**.” — **So** replaces a proposition.\n- “**So do I**.” — The speaker shares someone else's view or experience.\n- “**So it is!**” — The speaker recognises or confirms something.\n\nThe word order reflects different constructions, not freely interchangeable versions of one pattern.\n:::\n\n## 5. Choosing a negative response\n\nTo reject the proposition, English uses either **not** as the substitute or a negative verb followed by **so**. The preferred pattern depends on the verb.\n\n| Pattern | Natural negative response | Register or preference |\n| --- | --- | --- |\n| **hope so** | I **hope not**. | Normal pattern; avoid *I don't hope so* for this meaning. |\n| **think so** | I **don't think so**. \u002F I **think not**. | The first is usual; the second sounds formal or emphatic. |\n| **believe so** | I **don't believe so**. \u002F I **believe not**. | The second is more formal. |\n| **expect so** | I **don't expect so**. \u002F I **expect not**. | Both are possible. |\n| **suppose so** | I **suppose not**. \u002F I **don't suppose so**. | Both are possible. |\n| **be afraid so** | I'm **afraid not**. | Often introduces an unwelcome answer politely. |\n\n:::example\n“Will the repairs take another week?”\n\n- “I **hope not**.” — I want them not to take another week.\n- “I **don't think so**.” — My judgement is that they probably will not.\n- “I'm **afraid so**.” — Unfortunately, I believe they will.\n:::\n\nWith reporting verbs, negative placement can change the message. **She didn't say so** means that she did not state the proposition; it does not mean that she stated its opposite.\n\nSimilarly, **I don't think so** normally communicates a negative opinion, but it need not express absolute certainty.\n\n## 6. A practical checklist\n\n1. **Identify the reference:** an action or event suggests **do so**; a proposition may allow **so** or **not**.\n2. **Check the construction:** use **do so** with suitable dynamic meanings and clause-substitute **so** only with verbs that allow it.\n3. **Choose the negative pattern:** prefer **hope not**, **don't think so** and **I'm afraid not** in their usual contexts.\n4. **Check the meaning:** not reporting something is different from reporting that it is false.\n5. **Check clarity and register:** use substitution to reduce repetition, but repeat the wording when the reference would otherwise be unclear.","en","C1",97.02,[13],{"id":14,"name":15,"level":10,"language":9,"isCompleted":16,"completionPercentage":17,"totalExercises":18,"completedExercises":17},"01a0e1ab-d505-7ccd-a097-30c80f838585","Ellipsis and substitution",false,0,8,"2026-09-27T07:02:10+00:00","2026-10-14T10:40:29+00:00",[],{"name":15,"slug":23,"language":9},"ellipsis-and-substitution-c1",[],[26,37,46,54],{"@id":27,"@type":28,"id":29,"grammarPage":30,"title":31,"instructions":32,"displayOrder":17,"type":33,"questionCount":34,"blankCount":35,"isCompleted":16,"ogImageUrl":36},"\u002Fapi\u002Fgrammar_exercises\u002F01a0e1ab-df9c-7520-801d-fed327f68bce","GrammarExercise","01a0e1ab-df9c-7520-801d-fed327f68bce","\u002Fapi\u002Fgrammar_pages\u002F01a0e1ab-d60e-7755-901b-763344a63a75","Substitution with Do So, So and Not — Forms in Context","Choose the option that completes each sentence in context. Pay attention to reference, meaning and register.","word_select",15,18,"\u002Fuploads\u002Fimages\u002Fgpimg_071bc559-0e0d-4f87-a322-99689cb109b8_hero.webp?v=1790492532",{"@id":38,"@type":28,"id":39,"grammarPage":30,"title":40,"instructions":41,"displayOrder":42,"type":43,"questionCount":44,"blankCount":17,"isCompleted":16,"ogImageUrl":45},"\u002Fapi\u002Fgrammar_exercises\u002F01a0e1ab-dfbc-7e15-b9d1-cb9613a571a9","01a0e1ab-dfbc-7e15-b9d1-cb9613a571a9","Substitution with Do So, So and Not — Find and Correct the Error","Find the incorrect word and choose its correction.",1,"find_and_fix",10,"\u002Fuploads\u002Fimages\u002Fgpimg_45fe2a2e-705b-4b27-84ef-b726276671df_hero.webp?v=1790492532",{"@id":47,"@type":28,"id":48,"grammarPage":30,"title":49,"instructions":50,"displayOrder":51,"type":52,"questionCount":44,"blankCount":44,"isCompleted":16,"ogImageUrl":53},"\u002Fapi\u002Fgrammar_exercises\u002F01a0e1ab-dfc4-7ed8-bfb5-3b77c6abfd29","01a0e1ab-dfc4-7ed8-bfb5-3b77c6abfd29","Do So — Build Action References","Arrange the tiles to build each sentence. Leave out the extra word.",2,"sentence_builder","\u002Fuploads\u002Fimages\u002Fgpimg_6df29833-987e-4b57-9410-50cbb98aa862_hero.webp?v=1790492532",{"@id":55,"@type":28,"id":56,"grammarPage":30,"title":57,"instructions":50,"displayOrder":58,"type":52,"questionCount":59,"blankCount":59,"isCompleted":16,"ogImageUrl":60},"\u002Fapi\u002Fgrammar_exercises\u002F01a0e1ab-dfda-7cca-8eaf-b302843b78e2","01a0e1ab-dfda-7cca-8eaf-b302843b78e2","So and Not — Build Opinions and Replies",3,12,"\u002Fuploads\u002Fimages\u002Fgpimg_38dd2171-c533-4446-8d03-a2b93bc5b76f_hero.webp?v=1790492532",null]