
Regular verb: improve - improved - improved
| Present | Present continuous | Preterite | Preterite continuous | 
| I improve you improve he improves we improve you improve they improve | I am improving you are improving he is improving we are improving you are improving they are improving | I improved you improved he improved we improved you improved they improved | I was improving you were improving he was improving we were improving you were improving they were improving | 
| Present perfect | Present perfect continuous | Pluperfect | Pluperfect continuous | 
| I have improved you have improved he has improved we have improved you have improved they have improved | I have been improving you have been improving he has been improving we have been improving you have been improving they have been improving | I had improved you had improved he had improved we had improved you had improved they had improved | I had been improving you had been improving he had been improving we had been improving you had been improving they had been improving | 
| Future | Future continuous | Future perfect | Future perfect continuous | 
| I will improve you will improve he will improve we will improve you will improve they will improve | I will be improving you will be improving he will be improving we will be improving you will be improving they will be improving | I will have improved you will have improved he will have improved we will have improved you will have improved they will have improved | I will have been improving you will have been improving he will have been improving we will have been improving you will have been improving they will have been improving | 
| Present | Present continuous | Past | Past continuous | 
| I would improve you would improve he would improve we would improve you would improve they would improve | I would be improving you would be improving he would be improving we would be improving you would be improving they would be improving | I would have improved you would have improved he would have improved we would have improved you would have improved they would have improved | I would have been improving you would have been improving he would have been improving we would have been improving you would have been improving they would have been improving | 
| Infinitive | Imperative | 
| Infinitive | Imperative | ||
| to improve | improve Let's improve improve | 
| Present | Past | ||
| improving | improved |