[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"grammar-exercise-01a01413-9baf-7e2d-b102-40e4f0b748da":3,"grammar-exercise-lesson-019dfe2a-3524-779c-9c22-273be8bd4134":290},["Reactive",4],{"id":5,"grammarPage":6,"title":7,"instructions":8,"displayOrder":9,"type":10,"questions":11,"ogImageUrl":289},"01a01413-9baf-7e2d-b102-40e4f0b748da","\u002Fapi\u002Fgrammar_pages\u002F019dfe2a-3524-779c-9c22-273be8bd4134","Can, Could, May and Might - Find and Fix","One word in each sentence is wrong. Tap it, then choose the correction.",4,"find_and_fix",[12,39,63,92,119,140,163,186,206,222,248,269],{"id":13,"sentenceTemplate":14,"displayOrder":15,"explanation":16,"exampleSentence":17,"blanks":18,"payload":19},"01a01413-9bb0-7026-b223-ee26c29085e2","Historical records show that stable institutions can sometimes collapses after sudden crises.",0,"'Can sometimes' expresses a documented general possibility, and a modal is followed by the base verb 'collapse'.","Historical records show that stable institutions can sometimes collapse after sudden crises.",[],{"words":20,"correct":33,"wrongIndex":34,"corrections":35},[21,22,23,24,25,26,27,28,29,30,31,32],"Historical","records","show","that","stable","institutions","can","sometimes","collapses","after","sudden","crises.","collapse",8,[33,36,37,38],"collapsed","collapsing","collapsible",{"id":40,"sentenceTemplate":41,"displayOrder":42,"explanation":43,"exampleSentence":44,"blanks":45,"payload":46},"01a01413-9bb0-709e-b223-ee26c31a3744","Hale often interrupts students; his comments can is sharply sarcastic.",1,"The repeated interruptions establish characteristic behaviour, so 'can be' is appropriate. A modal is followed by the base form 'be'.","Hale often interrupts students; his comments can be sharply sarcastic.",[],{"words":47,"correct":57,"wrongIndex":58,"corrections":59},[48,49,50,51,52,53,27,54,55,56],"Hale","often","interrupts","students;","his","comments","is","sharply","sarcastic.","be",7,[57,60,61,62],"been","being","was",{"id":64,"sentenceTemplate":65,"displayOrder":66,"explanation":67,"exampleSentence":68,"blanks":69,"payload":70},"01a01413-9bb0-7102-b223-ee26c3595cf7","The machine is switched off, so it can't be processing samples or analyses them right now.",2,"The switched-off machine supports the present deduction 'can't be processing samples or analysing them'. The coordinated activities both use the '-ing' form after 'be'.","The machine is switched off, so it can't be processing samples or analysing them right now.",[],{"words":71,"correct":86,"wrongIndex":87,"corrections":88},[72,73,54,74,75,76,77,78,57,79,80,81,82,83,84,85],"The","machine","switched","off,","so","it","can't","processing","samples","or","analyses","them","right","now.","analysing",12,[86,89,90,91],"analysed","analytic","analysis",{"id":93,"sentenceTemplate":94,"displayOrder":95,"explanation":96,"exampleSentence":97,"blanks":98,"payload":99},"01a01413-9bb0-715a-b223-ee26c3fe3851","Tests date every layer to 1998, so the sculpture can't have originate in antiquity.",3,"The laboratory date supports the past deduction 'can't have originated'. A modal perfect takes a past participle.","Tests date every layer to 1998, so the sculpture can't have originated in antiquity.",[],{"words":100,"correct":113,"wrongIndex":114,"corrections":115},[101,102,103,104,105,106,76,107,108,78,109,110,111,112],"Tests","date","every","layer","to","1998,","the","sculpture","have","originate","in","antiquity.","originated",11,[113,116,117,118],"originating","originates","origin",{"id":120,"sentenceTemplate":121,"displayOrder":9,"explanation":122,"exampleSentence":123,"blanks":124,"payload":125},"01a01413-9bb0-71ca-b223-ee26c4e4c4f8","The cause remains uncertain; the loose cable could has triggered yesterday's outage.","For one uncertain completed event, use the modal-perfect form 'could have triggered'. A modal is followed by 'have', not 'has'.","The cause remains uncertain; the loose cable could have triggered yesterday's outage.",[],{"words":126,"correct":109,"wrongIndex":34,"corrections":137},[72,127,128,129,107,130,131,132,133,134,135,136],"cause","remains","uncertain;","loose","cable","could","has","triggered","yesterday's","outage.",[109,138,139,60],"had","having",{"id":141,"sentenceTemplate":142,"displayOrder":143,"explanation":144,"exampleSentence":145,"blanks":146,"payload":147},"01a01413-9bb0-7222-b223-ee26c563c8e4","Flight records show Noor was over the Atlantic, so she might have chaired the Berlin meeting in person.",5,"The flight records rule out attending in person, so use the strong past deduction 'can't have chaired'. 'Could have' and 'may have' leave it possible, while 'must have' claims the opposite of the records.","Flight records show Noor was over the Atlantic, so she can't have chaired the Berlin meeting in person.",[],{"words":148,"correct":78,"wrongIndex":159,"corrections":160},[149,22,23,150,62,151,107,152,76,153,154,109,155,107,156,157,111,158],"Flight","Noor","over","Atlantic,","she","might","chaired","Berlin","meeting","person.",10,[78,132,161,162],"may","must",{"id":164,"sentenceTemplate":165,"displayOrder":166,"explanation":167,"exampleSentence":168,"blanks":169,"payload":170},"01a01413-9bb0-728a-b223-ee26c6023ace","The calibration check is incomplete; these readings may not accurately reflects the temperature.",6,"The incomplete check supports the cautious negative possibility 'may not accurately reflect'. After 'may not', use the base form 'reflect'.","The calibration check is incomplete; these readings may not accurately reflect the temperature.",[],{"words":171,"correct":181,"wrongIndex":159,"corrections":182},[72,172,173,54,174,175,176,161,177,178,179,107,180],"calibration","check","incomplete;","these","readings","not","accurately","reflects","temperature.","reflect",[181,183,184,185],"reflected","reflecting","reflective",{"id":187,"sentenceTemplate":188,"displayOrder":58,"explanation":189,"exampleSentence":190,"blanks":191,"payload":192},"01a01413-9bb0-72e6-b223-ee26c6e76ed4","The translator might have taking the metaphor literally during the earlier review.","An uncertain past explanation uses 'might have' plus the past participle 'taken', not the simple-past form.","The translator might have taken the metaphor literally during the earlier review.",[],{"words":193,"correct":201,"wrongIndex":9,"corrections":202},[72,194,154,109,195,107,196,197,198,107,199,200],"translator","taking","metaphor","literally","during","earlier","review.","taken",[201,203,204,205],"took","take","takes",{"id":207,"sentenceTemplate":208,"displayOrder":34,"explanation":209,"exampleSentence":210,"blanks":211,"payload":212},"01a01413-9bb0-7342-b223-ee26c7746f2b","The model may had been inexpensive, but its predictions remained unreliable.","A modal perfect uses 'may have been'; the concession about price contrasts with the past criticism.","The model may have been inexpensive, but its predictions remained unreliable.",[],{"words":213,"correct":109,"wrongIndex":95,"corrections":221},[72,214,161,138,60,215,216,217,218,219,220],"model","inexpensive,","but","its","predictions","remained","unreliable.",[109,133,62,61],{"id":223,"sentenceTemplate":224,"displayOrder":225,"explanation":226,"exampleSentence":227,"blanks":228,"payload":229},"01a01413-9bb0-7396-b223-ee26c82cf4a2","The evidence makes success fairly likely, not certain; the revised model may well outperforms the old one.",9,"'May well' expresses the stated fairly likely but uncertain result. After the modal phrase, use the base form 'outperform'.","The evidence makes success fairly likely, not certain; the revised model may well outperform the old one.",[],{"words":230,"correct":242,"wrongIndex":243,"corrections":244},[72,231,232,233,234,235,177,236,107,237,214,161,238,239,107,240,241],"evidence","makes","success","fairly","likely,","certain;","revised","well","outperforms","old","one.","outperform",13,[242,245,246,247],"outperformed","outperforming","outperformance",{"id":249,"sentenceTemplate":250,"displayOrder":159,"explanation":251,"exampleSentence":252,"blanks":253,"payload":254},"01a01413-9bb0-73ee-b223-ee26c8f53618","Since the venue is closed, we might as well moved the seminar online.","'Might as well' is followed by a base verb and presents the sensible option when no better alternative is available.","Since the venue is closed, we might as well move the seminar online.",[],{"words":255,"correct":264,"wrongIndex":225,"corrections":265},[256,107,257,54,258,259,154,260,238,261,107,262,263],"Since","venue","closed,","we","as","moved","seminar","online.","move",[264,266,267,268],"moving","moves","movement",{"id":270,"sentenceTemplate":271,"displayOrder":114,"explanation":272,"exampleSentence":273,"blanks":274,"payload":275},"01a01413-9bb0-7446-b223-ee26c9e4ba48","The gallery's new sign says photography is forbidden: “Visitors might not photograph the exhibits.”","The current sign imposes a formal prohibition, so 'visitors may not photograph' means that photography is not permitted. 'Could not', 'would not', and 'should not' express inability, refusal or advice rather than the stated rule.","The gallery's new sign says photography is forbidden: “Visitors may not photograph the exhibits.”",[],{"words":276,"correct":161,"wrongIndex":225,"corrections":286},[72,277,278,279,280,281,54,282,283,154,177,284,107,285],"gallery's","new","sign","says","photography","forbidden:","“Visitors","photograph","exhibits.”",[161,132,287,288],"would","should","\u002Fuploads\u002Fimages\u002Fgpimg_12262e48-3686-4553-a640-ac622360b89e_hero.webp",{"title":291,"slug":292,"language":293,"level":294},"Modal Verbs: Can, Could, May & Might","modal-verbs-can-could-may-might","en","C1"]