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