11. If we didn't have languages, we couldn't communicate.
22. If we didn't have languages, we couldn't leave knowledge to younger generations.
33. If we didn't have senses, they wouldn't allow us to learn languages.
44. If we didn't have sense of sight, we couldn't read and write languages.
55. If there weren't logos, big companies's goods couldn't be recognized every nation.
66. If I came from your country, I could understand your problems.
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- Câu điều kiện loại 2 ( Diễn tả giả thiết không có thật ở hiện tại )
+, If clause: Quá khứ đơn.
( + ) S + Ved/ V2
( - ) S + did not/ didn't + V-inf
( ? ) Did + S + V-inf?
*Với to be, có thể dùng "were' cho tất cả mọi ngôi.
+, Main clause: S + would/could/might/... + (not) + V-inf + ...
- Khi viết lại câu với tình huống, phải đổi thể.