change
To change a verb from present tense to past tense, usually you add "-ed" to the end of the verb. For example, "to have" in present tense becomes "had" in past tense.
hear, it doesn't change because it is already in present tense. However, if you were talking in past tense, it would become heard.
Then is not a verb, so it does not have any tenses.
The verb is is the present tense.
present = see past = saw future = will see, going to see
To change a verb from present tense to past tense, usually you add "-ed" to the end of the verb. For example, "to have" in present tense becomes "had" in past tense.
He is.
Are.
Yes, it is. Change is present. Will change is future. Changed is past.
Change the past tense form of the verb to the present tense. For example. "I ran" becomes "I run"
The sentence starting 'You are sad....' is already in the present tense.
The past tense is 'knew'.
hear, it doesn't change because it is already in present tense. However, if you were talking in past tense, it would become heard.
you would say where.
enjoy
The present perfect tense of want is have/has wanted. Always is an adverb and does not change from one tense to another.
The present tense of the verb "watch" is "watches".