Regular verb: fertilize - fertilized - fertilized
Simple form | V-ing form |
I could fertilize you could fertilize he could fertilize we could fertilize you could fertilize they could fertilize | I could be fertilizing you could be fertilizing he could be fertilizing we could be fertilizing you could be fertilizing they could be fertilizing |
Perfect | V-ing perfect |
I could have fertilized you could have fertilized he could have fertilized we could have fertilized you could have fertilized they could have fertilized | I could have been fertilizing you could have been fertilizing he could have been fertilizing we could have been fertilizing you could have been fertilizing they could have been fertilizing |
Simple form | V-ing form |
I couldn't fertilize you couldn't fertilize he couldn't fertilize we couldn't fertilize you couldn't fertilize they couldn't fertilize | I couldn't be fertilizing you couldn't be fertilizing he couldn't be fertilizing we couldn't be fertilizing you couldn't be fertilizing they couldn't be fertilizing |
Perfect | V-ing perfect |
I couldn't have fertilized you couldn't have fertilized he couldn't have fertilized we couldn't have fertilized you couldn't have fertilized they couldn't have fertilized | I couldn't have been fertilizing you couldn't have been fertilizing he couldn't have been fertilizing we couldn't have been fertilizing you couldn't have been fertilizing they couldn't have been fertilizing |
Simple form | V-ing form |
could I fertilize? could you fertilize? could he fertilize? could we fertilize? could you fertilize? could they fertilize? | could I be fertilizing? could you be fertilizing? could he be fertilizing? could we be fertilizing? could you be fertilizing? could they be fertilizing? |
Perfect | V-ing perfect |
could I have fertilized? could you have fertilized? could he have fertilized? could we have fertilized? could you have fertilized? could they have fertilized? | could I have been fertilizing? could you have been fertilizing? could he have been fertilizing? could we have been fertilizing? could you have been fertilizing? could they have been fertilizing? |
Simple form | V-ing form |
couldn't I fertilize? couldn't you fertilize? couldn't he fertilize? couldn't we fertilize? couldn't you fertilize? couldn't they fertilize? | couldn't I be fertilizing? couldn't you be fertilizing? couldn't he be fertilizing? couldn't we be fertilizing? couldn't you be fertilizing? couldn't they be fertilizing? |
Perfect | V-ing perfect |
couldn't I have fertilized? couldn't you have fertilized? couldn't he have fertilized? couldn't we have fertilized? couldn't you have fertilized? couldn't they have fertilized? | couldn't I have been fertilizing? couldn't you have been fertilizing? couldn't he have been fertilizing? couldn't we have been fertilizing? couldn't you have been fertilizing? couldn't they have been fertilizing? |