Zdravim , cital som si tunajsie clanky o modalnych slovesach v minulom case ale nejako som nepochopil rozdiel medzi could a could have. Could ja could have by mali byt minule tvary slovesa can (pricom could sa pouziva v minulom aj buducomcase a couldn't have v minulosti)
<br/> Preco sa potom hovori “I couldn't sleep tonight” namiesto “I couldn't have slept tonight”? <br/> a “When i was child i could play piano” namiesto “When i was child , i could have played piano”?