Regular verb: strengthen - strengthened - strengthened
Simple form | V-ing form |
I should strengthen you should strengthen she should strengthen we should strengthen you should strengthen they should strengthen | I should be strengthening you should be strengthening she should be strengthening we should be strengthening you should be strengthening they should be strengthening |
Perfect | V-ing perfect |
I should have strengthened you should have strengthened she should have strengthened we should have strengthened you should have strengthened they should have strengthened | I should have been strengthening you should have been strengthening she should have been strengthening we should have been strengthening you should have been strengthening they should have been strengthening |
Simple form | V-ing form |
I should not strengthen you should not strengthen she should not strengthen we should not strengthen you should not strengthen they should not strengthen | I should not be strengthening you should not be strengthening she should not be strengthening we should not be strengthening you should not be strengthening they should not be strengthening |
Perfect | V-ing perfect |
I should not have strengthened you should not have strengthened she should not have strengthened we should not have strengthened you should not have strengthened they should not have strengthened | I should not have been strengthening you should not have been strengthening she should not have been strengthening we should not have been strengthening you should not have been strengthening they should not have been strengthening |
Simple form | V-ing form |
should I strengthen? should you strengthen? should she strengthen? should we strengthen? should you strengthen? should they strengthen? | should I be strengthening? should you be strengthening? should she be strengthening? should we be strengthening? should you be strengthening? should they be strengthening? |
Perfect | V-ing perfect |
should I have strengthened? should you have strengthened? should she have strengthened? should we have strengthened? should you have strengthened? should they have strengthened? | should I have been strengthening? should you have been strengthening? should she have been strengthening? should we have been strengthening? should you have been strengthening? should they have been strengthening? |
Simple form | V-ing form |
should I not strengthen? should you not strengthen? should she not strengthen? should we not strengthen? should you not strengthen? should they not strengthen? | should I not be strengthening? should you not be strengthening? should she not be strengthening? should we not be strengthening? should you not be strengthening? should they not be strengthening? |
Perfect | V-ing perfect |
should I not have strengthened? should you not have strengthened? should she not have strengthened? should we not have strengthened? should you not have strengthened? should they not have strengthened? | should I not have been strengthening? should you not have been strengthening? should she not have been strengthening? should we not have been strengthening? should you not have been strengthening? should they not have been strengthening? |