`1`. If we didn't have languages, we couldn't communicate.

`2`. If we didn't have languages, we couldn't leave knowledge to younger generations.

`3`. If we didn't have senses, they wouldn't allow us to learn languages.

`4`. If we didn't have sense of sight, we couldn't read and write languages.

`5`. If there weren't logos, big companies's goods couldn't be recognized every nation.

`6`. If I came from your country, I could understand your problems.

--------------------

- 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.

`-` CĐK Loại `2` : Diễn tả hành động không có thật ở Hiện tại

`+` If - clause : Thì QKĐ : S + Ved / V2

`+` Main - clause : Thì TLTQK : S + would + V

`1`.If we didn't have languages , we wouldn't use them for communication

`2`.If we didn't have languages , we couldn't leave knowledge to our younger generations

`3`.If we didn't have senses , they wouldn't allow us to learn languages

`4`.If we didn't have sense of sight , we couldn't read and write languages

`5`.If there weren't logos , big companies' goods couldn't be recognized in every nation

`6`.If I came from your country , I could understand your problems

`\text{# TF}`