Stumbled.
No, stumbled is the past tense of the VERB stumble
Stumbled is a verb in the past tense.
It really depends on what form of writing you are talking about. If your talking in past tense then it is 'stumbled' as in "He stumbled backwards." But if you are talking in present tense then you would use 'stumble' as in "I stumble backwards." I hope that helped :)
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense is she did.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
HAD is the Past Tense of TO HAVE.
The past tense of "you will not" is "you would not."