[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-9cd2-72bf-833e-67dfcef62c1e":3,"grammar-exercise-lesson-019ba7e3-8713-7c45-a547-be8a80ad5763":111},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":110},"01a01413-9cd2-72bf-833e-67dfcef62c1e","\u002Fapi\u002Fgrammar_pages\u002F019ba7e3-8713-7c45-a547-be8a80ad5763","Can't Have and Needn't Have - Sort the Patterns","Tap a card, then tap the column where it belongs. Place every card to finish the board.",4,"word_sort",[12,36,60,83],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"blanks":17,"payload":18},"01a01413-9cd2-73df-833e-67dfcf4c3330","Sort each meaning by the past modal form that expresses that degree of certainty.",0,"Can't have expresses an almost-certain negative deduction; must have expresses an almost-certain positive deduction. Might have and may have present something as possible rather than certain.",[],{"items":19,"categories":35},[20,23,25,28,30,33],{"text":21,"category":22},"the evidence makes it impossible","can't have",{"text":24,"category":22},"almost certainly did not happen",{"text":26,"category":27},"the evidence strongly confirms it","must have",{"text":29,"category":27},"almost certainly happened",{"text":31,"category":32},"one possible explanation","might\u002Fmay have",{"text":34,"category":32},"perhaps it happened",[22,27,32],{"id":37,"sentenceTemplate":38,"displayOrder":39,"explanation":40,"blanks":41,"payload":42},"01a01413-9cd2-743b-833e-67dfcfb3f4c4","Sort each form by what it tells you about the action itself.",1,"Look past the certainty and ask what became of the action. Needn't have and shouldn't have both report something that was done. Can't have and couldn't have both rule the action out. Didn't need to reports only the absence of necessity, so the action may or may not have followed.",[],{"items":43,"categories":59},[44,47,49,52,54,57],{"text":45,"category":46},"needn't have paid","The action happened",{"text":48,"category":46},"shouldn't have paid",{"text":50,"category":51},"can't have paid","It did not happen",{"text":53,"category":51},"couldn't have known",{"text":55,"category":56},"didn't need to pay","The form does not say",{"text":58,"category":56},"didn't need to call",[46,51,56],{"id":61,"sentenceTemplate":62,"displayOrder":63,"explanation":64,"blanks":65,"payload":66},"01a01413-9cd2-7477-833e-67dfd07b8d43","Sort each sentence by whether the unnecessary action is completed or still ahead.",2,"Needn't have plus a past participle looks back at a completed action that proved unnecessary. Needn't plus a base verb says a present or future action is not necessary.",[],{"items":67,"categories":82},[68,71,73,75,78,80],{"text":69,"category":70},"You needn't have bought milk.","Completed but unnecessary",{"text":72,"category":70},"We needn't have waited.",{"text":74,"category":70},"She needn't have signed it.",{"text":76,"category":77},"You needn't buy milk.","Not necessary now or later",{"text":79,"category":77},"We needn't wait.",{"text":81,"category":77},"She needn't sign it.",[70,77],{"id":84,"sentenceTemplate":85,"displayOrder":86,"explanation":87,"blanks":88,"payload":89},"01a01413-9cd2-74e3-833e-67dfd0819056","Sort each past-modal sentence by whether its grammar is correct.",3,"A perfect modal uses modal + have + past participle. A continuous or passive form adds been after have, while present needn't takes a base verb without have.",[],{"items":90,"categories":109},[91,94,96,98,100,103,105,107],{"text":92,"category":93},"She can't have received it.","Correct",{"text":95,"category":93},"They needn't have waited.",{"text":97,"category":93},"Leo can't have known.",{"text":99,"category":93},"We needn't have brought food.",{"text":101,"category":102},"She can't received it.","Not correct",{"text":104,"category":102},"They needn't have wait.",{"text":106,"category":102},"Leo can't have knew.",{"text":108,"category":102},"We needn't has brought food.",[93,102],"\u002Fuploads\u002Fimages\u002Fgpimg_221f27b9-7de6-4c8a-a05b-b4fd0369f424_hero.webp",{"title":112,"slug":113,"language":114,"level":115},"Modals (can’t have & needn’t have)","modals-cant-have-neednt-have","en","B2"]