Identifying Tenses and Question Types in Text

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Question:

Instructions: Read the following text and identify the sentences that relate to the topics you have seen, as well as explain why they are from that topic. (Lee el siguiente texto e identifica las oraciones que se relacionan con los temas vistos, así mismo explica el por qué son de ese tema.)

Topics to be identified (Temas vistos a identificar):

Past Perfect Object Questions Present Perfect Question Tags Second Conditional Relative Clauses Third Conditional Past Perfect Continuous Subject Questions Present Perfect Continuous

The Discovery of Water on Mars Scientists have discovered water on Mars. This discovery is important because it shows that life could have existed there. They have been studying Mars for many years, using advanced technology. If they had found water earlier, they might have started exploring Mars sooner. One of the scientists who made this discovery was Dr. Alice Johnson. She has worked at NASA for over ten years. Her team had been investigating Mars's surface when they found evidence of water. If humans could live on Mars, it would be a great achievement. But, if they had not discovered water, they wouldn't have considered colonizing Mars. Who discovered water on Mars? It was a team led by Dr. Johnson. What did they find? They found signs of water beneath the surface. This finding, which is crucial for future space missions, raises many questions. Scientists will continue their research, won't they? They have already planned new missions to Mars, focusing on areas where water has been detected. If they discover more water, it will confirm their theories. The search for water on Mars has been ongoing for decades. Scientists had been hoping to find signs of life, and now they have taken a significant step forward.

Answer:

Here are the sentences from the text that relate to the identified topics, along with explanations for each:

  1. Present Perfect:

    • "Scientists have discovered water on Mars."
    • "They have been studying Mars for many years."
    • "She has worked at NASA for over ten years."
    • "They have already planned new missions to Mars, focusing on areas where water has been detected."
    • "The search for water on Mars has been ongoing for decades."

    Explanation: These sentences use the present perfect tense, which is used to describe actions that occurred at an unspecified time in the past and have relevance to the present. The discoveries and ongoing studies are relevant to current scientific understanding and exploration.

  2. Past Perfect:

    • "If they had found water earlier, they might have started exploring Mars sooner."
    • "Her team had been investigating Mars's surface when they found evidence of water."
    • "But, if they had not discovered water, they wouldn't have considered colonizing Mars."

    Explanation: These sentences use the past perfect tense, which indicates actions that were completed before another action in the past. They reflect hypothetical situations regarding past discoveries and their implications.

  3. Second Conditional:

    • "If humans could live on Mars, it would be a great achievement."
    • "If they discover more water, it will confirm their theories."

    Explanation: These sentences express hypothetical situations and their possible outcomes. The second conditional is used to talk about unreal or unlikely situations in the present or future.

  4. Relative Clauses:

    • "One of the scientists who made this discovery was Dr. Alice Johnson."
    • "This finding, which is crucial for future space missions, raises many questions."

    Explanation: These sentences contain relative clauses, which provide additional information about a noun. They help to specify or give more detail about the subjects being discussed.

  5. Object Questions:

    • "Who discovered water on Mars?"
    • "What did they find?"

    Explanation: These sentences are examples of object questions, which ask for specific information about the object of the verb. They seek to clarify who performed an action and what was discovered.

  6. Question Tags:

    • "Scientists will continue their research, won't they?"

    Explanation: This sentence includes a question tag, which is a short question added to the end of a statement to confirm information or seek agreement. It reflects the speaker's expectation of agreement from the listener.

The other topics (Third Conditional, Past Perfect Continuous, Subject Questions, Present Perfect Continuous) are not represented in the provided text.