16/03/14 20:56:04.26 ffsC6I5k.net
>>429 英語学習者がよく犯す過ちだね。
『Longman Dictionary of Common Errors』(J.B. Heaton and N. D. Turton)の見出し
couldで、下記の記述がある。
（Wrong）By reading quickly, I could finish the book before the library closed.
（Correct）By reading quickly, I was able to finish the book before the library closed.
When talking about the successful performance of a difficult task, use be able to, NOT could.