Here's a handy little table that might help you with the placement of the verb in a sentence. I've kept the verb the same to avoid confusing the issue.
|
|
|
|
|
| usually... | now... | yesterday... | |
| statement | you teach | you are teaching | you taught |
| question | do you teach? | are you teaching? | did you teach? |
| negative statement | you don't teach | you aren't teaching | you didn't teach |
| negative question | don't you teach? | aren't you teaching? | didn't you teach? |
| short answer | you do | you are | you did |
| negative short answer | you don't | you aren't | you didn't |
|
|
|
|
|
| when I arrived... | ...already... | ...for ten minutes... | |
| statement | you were teaching | you have taught | you've been teaching |
| question | were you teaching? | have you taught? | have you been teaching? |
| negative statement | you weren't teaching | you haven't taught | you haven't been teaching |
| negative question | weren't you teaching? | haven't you taught? | haven't you been teaching? |
| short answer | you were | you have | you have |
| negative short answer | you weren't | you haven't | you haven't |
|
|
|
|
|
| tomorrow... | when I arrive tomorrow... | by the time I arrive... | |
| statement | you will teach | you will be teaching | you will have taught |
| question | will you teach? | will you be teaching? | will you have taught? |
| negative statement | you won't teach | you won't be teaching | you won't have taught |
| negative question | won't you teach? | won't you be teaching? | won't you have taught? |
| short answer | you will | you will | you will have |
| negative short answer | you won't | you won't | you won't have |
|
|
|
|
| by the time I arrive...for twenty minutes... | if he paid you $500... | |
| statement | you will have been teaching | you would teach |
| question | will you have been teaching? | would you teach? |
| negative statement | you won't have been teaching | you wouldn't teach |
| negative question | won't you have been teaching? | wouldn't you teach? |
| short answer | you will | you would |
| negative short answer | you won't | you wouldn't |
|
|
|
|
| before I arrived...already... | when I arrived...for twenty minutes | |
| statement | you had taught | you had been teaching |
| question | had you taught? | had you been teaching? |
| negative statement | you hadn't taught | you hadn't been teaching |
| negative question | hadn't you taught? | hadn't you been teaching? |
| short answer | you had | you had been |
| negative short answer | you hadn't | you hadn't been |
|
|
|
|
|
| If I arrived late...already... | If he had paid you $500. | If I had arrived later...already...for twenty minutes | |
| statement | you would be teaching | you would have taught | you would have been teaching |
| question | would you be teaching? | would you have taught? | would you have been teaching? |
| negative statement | you wouldn't be teaching | you wouldn't have taught | you wouldn't have been teaching |
| negative question | wouldn't you be teaching? | wouldn't you have taught? | wouldn't you have been teaching? |
| short answer | you would | you would (have) | you would (have) |
| negative short answer | you wouldn't | you wouldn't (have) | you wouldn't (have) |