第1个回答 2021-04-28
he does not know the reason why he always made such a mistake.
望采纳
第2个回答 2021-04-28
He always doesn't quite understand the reason why he made such a mistake.
第3个回答 2021-04-28
他总不太明白他犯这样一个错误的原因。
He doesn't understand the reason he made such a mistake.
第4个回答 2021-04-28
他总不太明白他犯这样一个错误的原因
He hardly understand the reason he made such a wrong.
第5个回答 2021-04-28
He always doesn't quite understand why he made such a mistake