Active: The puppy ran outside. The puppy ate from the bowl. The puppy chews its toy.
Passive: The puppy was running until it was tired. The puppy was drinking too much water. The puppy will be waiting for its new toy.
Active: In a active sentence the subject is the doer of the action.
Passive: In a passive sentence the subject is the receiver of the action
The subjunctive mood of a verb can express a wish or a condition that is contrary to to fact. The past tense is used to state present wishes or desires or contrary-to-fact conditions. The past perfect tense is used to state past wishes, desires, or contrary-to-fact conditions.
Whether Zani buys a bike or a chair, he will be happy.
Whether Zachary sells his bike or his chair, he will be mad.
The emphatic mood is the form of a verb that gives special force to a simple present or past tense verb. For the present tense, use do or does before the base form of the verb. For the past tense, use did before the base form of the verb. Do not confused this with do, does, and did used as auxiliary verbs in questions or negative sentences.
I do like that lion. I do want to hear the lions roar.