| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | catch on | catch on | catches on | catch on | catch on | catch on |
| Present continuous | am catching on | are catching on | is catching on | are catching on | are catching on | are catching on |
| Simple past | caught on | caught on | caught on | caught on | caught on | caught on |
| Past continuous | was catching on | were catching on | was catching on | were catching on | were catching on | were catching on |
| Simple future | will catch on | will catch on | will catch on | will catch on | will catch on | will catch on |
| Future continuous | will be catching on | will be catching on | will be catching on | will be catching on | will be catching on | will be catching on |
| Present perfect | have caught on | have caught on | has caught on | have caught on | have caught on | have caught on |
| Present perfect continuous | have been catching on | have been catching on | has been catching on | have been catching on | have been catching on | have been catching on |
| Past perfect | had caught on | had caught on | had caught on | had caught on | had caught on | had caught on |
| Past perfect continuous | had been catching on | had been catching on | had been catching on | had been catching on | had been catching on | had been catching on |
| Future perfect | will have caught on | will have caught on | will have caught on | will have caught on | will have caught on | will have caught on |
| Future perfect continuous | will have been catching on | will have been catching on | will have been catching on | will have been catching on | will have been catching on | will have been catching on |
| sg1st | sg2nd | sg3rd | pl1st | pl2nd | pl3rd | |
|---|---|---|---|---|---|---|
| Simple present | don't catch on | don't catch on | doesn't catch on | don't catch on | don't catch on | don't catch on |
| Present continuous | am not catching on | are not catching on | is not catching on | are not catching on | are not catching on | are not catching on |
| Simple past | didn't catch on | didn't catch on | didn't catch on | didn't catch on | didn't catch on | didn't catch on |
| Past continuous | was not catching on | were not catching on | was not catching on | were not catching on | were not catching on | were not catching on |
| Simple future | won't catch on | won't catch on | won't catch on | won't catch on | won't catch on | won't catch on |
| Future continuous | will not be catching on | will not be catching on | will not be catching on | will not be catching on | will not be catching on | will not be catching on |
| Present perfect | have not caught on | have not caught on | has not caught on | have not caught on | have not caught on | have not caught on |
| Present perfect continuous | have not been catching on | have not been catching on | has not been catching on | have not been catching on | have not been catching on | have not been catching on |
| Past perfect | had not caught on | had not caught on | had not caught on | had not caught on | had not caught on | had not caught on |
| Past perfect continuous | had not been catching on | had not been catching on | had not been catching on | had not been catching on | had not been catching on | had not been catching on |
| Future perfect | will not have caught on | will not have caught on | will not have caught on | will not have caught on | will not have caught on | will not have caught on |
| Future perfect continuous | will not have been catching on | will not have been catching on | will not have been catching on | will not have been catching on | will not have been catching on | will not have been catching on |