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