The Animal Adoption Society 1) needs (need) your help! At the moment we 2) are having (have) more than 20 dogs and 35 cats. We 3) are looking (look) for people who 4) love (love) animals and who 5) take (take) care of pets. Do you want (you/want) to adopt one of our pets? We 7) are having (have) an open day this weekend. Adoption 8) is (be) completely free!
Let's break it down:
needs: This is the present simple tense. The verb "need" is in its base form because it's a third-person singular subject ("The Animal Adoption Society"), so we add an "s".
are having: This is the present continuous tense. We use "are" (the present tense of "to be" for plural subjects) followed by the verb "have" with the "-ing" ending. This indicates an action happening at the moment of speaking.
are looking: This is also in the present continuous tense. "We" is the subject, and "are" is the present tense of "to be" for "we." The verb "look" gets the "-ing" ending to show that the action is ongoing right now.
love: This is the present simple tense. The verb "love" is in its base form because it's a general statement about people who love animals, indicating a habitual action or a general truth.
take: This is also the present simple tense. The verb "take" is in its base form, indicating a habitual action or a general truth about people who care for pets.
Do you want: This is a question in the present simple tense. We use "do" as the auxiliary verb, followed by the subject "you" and the base form of the verb "want."
are having: This is again the present continuous tense. "We" is the subject, and "are" is the present tense of "to be" for "we." The verb "have" gets the "-ing" ending to show that the event is happening this weekend.
is: This is the present simple tense. "Adoption" is a singular noun, so we use "is" as the present tense of "to be" to indicate a general truth.
In summary, the present simple tense is used to express habitual actions, general truths, and states, while the present continuous tense is used to indicate ongoing actions happening at the moment of speaking or around the current time period.