6,
- Those lessons are too difficult for him to understand them.
- Those lessons aren't easy enough for him to understand them.
(easy : dễ $$\ne$$ difficult : khó)
7,
- She was too busy to do the housework.
- She wasn't free enough to do the housework.
(busy : bận $$\ne$$ free : rảnh , độc lập)
8,
- The climate was too bad for all the plants to grow well.
- The climate wasn't good enough for all the plants to grow well.
(good : tốt $$\ne$$ bad : tệ , xấu)
9,
- I'm too tired to keep my eyes open.
- I'm not fine enough to keep my eyes open.
(tired : mệt $$\ne$$ fine : khỏe)
10,
- That boy is too lazy to do his homework.
- That boy isn't hard enough to do his homework.
(lazy : lười $$\ne$$ hard : siêng năng)
@ Cấu trúc:
- S + be/V + too + adj/adv + (for sb) + to V : quá (cho ai) để làm gì
- S + be/V + adj/adv + enough + (for sb) + to V : đủ (cho ai) để làm gì
@ Cách làm:
- Khi chuyển về too thì đổi các trạng từ như very , so , ... về too
- Từ too sang enough phải chuyển từ dạng khẳng định sang phủ định , từ trái nghĩa.
- Nếu 2 chủ ngữ ở 2 mệnh đề khác nhau thì khi chuyển về dùng for sb.