Question

4. Define the tense of the predicate and put the sentences into the interrogative and negative forms: 1. I am studying biology. 2. He has solved this difficult problem. 3. He is a good biologist. 4. My teacher developed a new plant. 5. These scientists work at a very interesting problem. 6. They began to investigate this problem last year. 7. Animals and plants live under different conditions. 8. Life exists in many places on the earth. 9. Some animals can exist under the immense pressure of the deep seas. 10. Biologists have solved many mysteries of the body. 11. Students of the biological faculty study different subjects.

Answer 1

Определите время сказуемого и переведите предложения в вопросительной и отрицательной формах:1. Я изучаю биологию. 2. Он решил эту непростую проблему. 3. Он хороший биолог. 4. Мой учитель разработал новый завод. 5. Эти ученые работают над очень интересной проблемой. 6. Они начали исследовать эту проблему в прошлом году. 7. Животные и растения живут в разных условиях. 8. Жизнь существует во многих местах на земле. 9. Некоторые животные могут существовать под огромным давлением океанских глубин. 10. Биологи раскрыли многие тайны тела. 11. Студенты биологического факультета различным предметам.

Answer 2

Sentence 1: "I am studying biology."

The tense of the predicate in this sentence is the present continuous tense.

Interrogative form: Am I studying biology? Negative form: I am not studying biology.

Sentence 2: "He has solved this difficult problem."

The tense of the predicate in this sentence is the present perfect tense.

Interrogative form: Has he solved this difficult problem? Negative form: He has not solved this difficult problem.

Sentence 3: "He is a good biologist."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Is he a good biologist? Negative form: He is not a good biologist.

Sentence 4: "My teacher developed a new plant."

The tense of the predicate in this sentence is the past simple tense.

Interrogative form: Did my teacher develop a new plant? Negative form: My teacher did not develop a new plant.

Sentence 5: "These scientists work at a very interesting problem."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Do these scientists work at a very interesting problem? Negative form: These scientists do not work at a very interesting problem.

Sentence 6: "They began to investigate this problem last year."

The tense of the predicate in this sentence is the past simple tense.

Interrogative form: Did they begin to investigate this problem last year? Negative form: They did not begin to investigate this problem last year.

Sentence 7: "Animals and plants live under different conditions."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Do animals and plants live under different conditions? Negative form: Animals and plants do not live under different conditions.

Sentence 8: "Life exists in many places on the earth."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Does life exist in many places on the earth? Negative form: Life does not exist in many places on the earth.

Sentence 9: "Some animals can exist under the immense pressure of the deep seas."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Can some animals exist under the immense pressure of the deep seas? Negative form: Some animals cannot exist under the immense pressure of the deep seas.

Sentence 10: "Biologists have solved many mysteries of the body."

The tense of the predicate in this sentence is the present perfect tense.

Interrogative form: Have biologists solved many mysteries of the body? Negative form: Biologists have not solved many mysteries of the body.

Sentence 11: "Students of the biological faculty study different subjects."

The tense of the predicate in this sentence is the present simple tense.

Interrogative form: Do students of the biological faculty study different subjects? Negative form: Students of the biological faculty do not study different subjects.