Modal Perfect: Usos i Estructura
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Modal Perfect | Usos |
Must have | Conclusió lògica sobre un fet passat |
May/might have | Suposició sobre un fet passat |
Possibilitat que alguna cosa fos certa | |
Could have | Es podia haver fet alguna cosa en el passat, però no es va fer |
Couldn’t have | Certesa que alguna cosa no podia haver passat |
Would have | Es volia haver fet alguna cosa en el passat, però no es va fer |
Should/shouldn’t/ought to have | Queixar-se de un fet que va tenir lloc |
Lamentar-se que no s’hagi complert allò que s’esperava | |
Needn’t have | No calia fer allò que es va fer |
Modal | Usos | Modal | Usos |
Can | Habilitat o capacitat | May | Donar o denegar permís |
Donar, demanar permís | Should/ought to | Donar consell | |
Suggeriments | Need to | Obligació, necessitat | |
Possibilitat | Have to | Obligació, necessitat | |
Be able to | Habilitat, possibilitat | Must | Obligació, necessitat |
Can’t | No habilitat o capacitat | Creure | |
Prohibició | Mustn’t | Prohibició | |
Deducció negativa | Don’t have to | Absència d’obligació | |
Could (past) | Habilitat o capacitat | Needn’t | Absència d’obligació |
Donar, demanar permís | Would | Demanar fer alguna cosa | |
Suggeriments | Oferiment, invitació | ||
Possibilitat | Shall | Oferiment, suggeriment | |
May/might | Possibilitat | ||
Tense | Actiu | Passiu |
Present simple | Amazon sells books online | Books are sold online by Amazon |
Past simple | Amazon sold books online | Books were sold online by Amazon |
Future simple | Amazon will sell books online | Books will be sell online by Amazon |
Present continuous | Amazon is selling books online | Books are being sold online by Amazon |
Past continuous | Amazon was selling books online | Books were being sold online by Amazon |
Present perfect simple | Amazon has sold books online | Books have been sold online by Amazon |
Past perfect simple | Amazon had sold books online | Books had been sold online by Amazon |
Modals | Amazon should sell books online | Books should be sold online by Amazon |
Modals perfects | Amazon could have sold books online | Books could have been sold online by Amazon |
Have to | Amazon has to sell books online | Books have to be sold online by Amazon |
Be going to | Amazon is going to sell books online | Books are going to be sold online by Amazon |