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