| singular | plural |
| Infinitive | | |
| improve | |
| present simple | | |
| 1 | I improve | we improve |
| 2 | you improve | you improve |
| 3 | he/she/it improves | they improve |
| past simple | | |
| 1 | I improved | we improved |
| 2 | you improved | you improved |
| 3 | he/she/it improved | they improved |
| future simple | | |
| 1 | I will/shall improve | we will/shall improve |
| 2 | you will/shall improve | you will/shall improve |
| 3 | he/she/it will/shall improve | they will/shall improve |
| conditional simple | | |
| 1 | I would improve | we would improve |
| 2 | you would improve | you would improve |
| 3 | he/she/it would improve | they would improve |
| present continuous | | |
| 1 | I am improving | we are improving |
| 2 | you are improving | you are improving |
| 3 | he/she/it is improving | they are improving |
| past continuous | | |
| 1 | I was improving | we were improving |
| 2 | you were improving | you were improving |
| 3 | he/she/it was improving | they were improving |
| future continuous | | |
| 1 | I will be improving | we will be improving |
| 2 | you will be improving | you will be improving |
| 3 | he/she/it will be improving | they will be improving |
| conditional continuous | | |
| 1 | I would be improving | we would be improving |
| 2 | you would be improving | you would be improving |
| 3 | he/she/it would be improving | they would be improving |
| present perfect | | |
| 1 | I have improved | we have improved |
| 2 | you have improved | you have improved |
| 3 | he/she/it has improved | they have improved |
| past perfect | | |
| 1 | I had improved | we had improved |
| 2 | you had improved | you had improved |
| 3 | he/she/it had improved | they had improved |
| future perfect | | |
| 1 | I will have improved | we will have improved |
| 2 | you will have improved | you will have improved |
| 3 | he/she/it will have improved | they will have improved |
| conditional perfect | | |
| 1 | I would have improved | we would have improved |
| 2 | you would have improved | you would have improved |
| 3 | he/she/it would have improved | they would have improved |
