he did not leam his lesson : So it is difficult for him to understand the new leson -->if giúp mình vs
2 câu trả lời
=> If he had learnt this lesson, he could have understood the new lesson.
Giải thích: Câu điều kiện loại 3: If+ quá khứ hoàn thành, S+ would/could+ have+ PII...
he did not leam his lesson : So it is difficult for him to understand the new lesson
-->If he had learnt this lesson, he would have understood the new lesson.
