1. Is dad not windsurfing right now? 2. Is Sally not choosing a present at the moment? 3. Am I not combing my hair now?

Present Progressive (Continuous) Tense:
This tense is used to describe actions that are happening at the moment of speaking or around the current time. It is formed by using the helping verb "is/are/am" with the base form of the verb plus "-ing" for all subjects. When forming negative sentences in the present progressive tense, "not" is placed after the helping verb.

1. Пояснение: In the first sentence, the subject is "dad" and the helping verb "is" is used for the third person singular. The base form of the verb "windsurf" is used, followed by "-ing" to make it "windsurfing." Since we want to form a negative sentence, we will add "not" after the helping verb. So the complete sentence would be "Dad is not windsurfing right now."

2. Пояснение: In the second sentence, the subject is "Sally" and the helping verb "is" is used for the third person singular. The base form of the verb "choose" is used, followed by "-ing" to make it "choosing." Since we want to form a negative sentence, we will add "not" after the helping verb. So the complete sentence would be "Sally is not choosing a present at the moment."

3. Пояснение: In the third sentence, the subject is "I" and the helping verb "am" is used for the first person singular. The base form of the verb "comb" is used, followed by "-ing" to make it "combing." Since we want to form a negative sentence, we will add "not" after the helping verb. So the complete sentence would be "I am not combing my hair now."

Например:
1. Is John not studying right now?
2. Are they not playing basketball at the park?
3. Am I not reading a book currently?

Совет: To better understand the present progressive tense, it is important to remember that it describes actions happening at the moment or around the current time. Practice using the appropriate forms of the helping verbs "is/are/am" with different subjects and verbs to familiarize yourself with this tense.

Дополнительное задание: Rewrite the following sentences in the present progressive tense, making them negative:
1. She is eating dinner now.
2. They are playing video games.
3. We are studying for the test.