質問: what is the difference between i thought i saved the file. and i should have saved the file. and i was sure that i saved it. ? what is the difference between i thought i saved the file. and i should have saved the file. and i was sure that i saved it. ?
回答: i thought i saved it 保存したと思った i should have saved it 保存するべきだった・保存すればよかった(この二つの解釈しかされません) i was sure that i saved it てっきり保存したと思った・保存したという自信があったわ