ĐÁP ÁN+GIẢI THÍCH:

1/ Minh hasn't talked to Kathy for three months

s+have/has(not)+v3/ed+O+for/since

2/ Ms Nga asked Nam how often he wrote to his mother

s+asked+O+wh_questions

lùi thì đổi thể

3/ If you go to visit Son Doong Cave, you'll fall in love with nature

4/ Because everyone felt tired and hungry, they sat down under the tree and had a snack

because+s+v+o,s+v+s

1. The last time Minh talked to Kathy was three months ago.

=> Minh hasn’t talked to Kathy for three months.

Giải thích: Đề: Lần cuối cùng Minh nói chuyện với Kathy là 3 tháng trước => đổi lại là: Minh đã không nói chuyện với Kathy 3 tháng

2. Ms Nga said to Nam, “How often do you write to your mother?”

=> Ms Nga asked Nam how often he wrote to his morther

Giải thích: Đây là câu tường thuật. Công thức như sau S + say/said/tell/told + (that) + S + V

3. Go to visit Son Doong Cave, and I’m sure you‘ll fall in love with nature.

=> If you visit Son Doong cave, and I am sure you will fall in love with nature

4. Everyone felt tired and hungry, so they sat down under the tree and had a snack.

=> Because everyone everyone felt tired and hungry so they sat down under the tree and had a snack.

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