Diễn đạt khả năng
| Modal | Nghĩa | Ví dụ |
|---|---|---|
| can | khả năng hiện tại | She can speak three languages. |
| could | khả năng trong quá khứ, chung chung | When I was young, I could run for hours. |
| was/were able to | làm được một việc cụ thể trong quá khứ | Despite the traffic, we were able to arrive on time. |
| will be able to | khả năng tương lai | After the course you will be able to code. |
| can / could / may / might | tính khả thi | This approach can reduce costs significantly. |