Sorting Materials into Groups - CBSE - VI - SCIENCE

Objects Around Us

  • Everywhere we look, there's a huge variety of objects. Examples: Chairs, Bullock carts, Cycles, Cooking utensils, Books, Clothes, Toys, Water, Stones, And many more objects.
  • There are objects that are round in shape. Examples: Rubber ball, Football, Glass marble.
  • There are objects that are almost round in shape. Examples: Apples, Oranges, Earthen pitcher (Gharha).
  • There are objects made of plastics. Examples: Buckets, Lunch boxes, Toys, Water containers, Pipes.
  • Everything around us is made of materials. Examples: Glass, Metal, Plastics, Wood, Cotton, Paper, Mud, Soil.

Objects and the materials they are made of

Objects Materials they are made of
Plate (thali) Steel, glass, plastics (any other)
Pen Plastics, metal

What are the types of Subject?

There are three main types of subjects in English: simple subjects, compound subjects, and complete subjects.

  • Simple subject is a single noun or pronoun that tells us who or what the sentence is about. For example, in the sentence "The cat jumped on the table," the simple subject is "cat."
  • Compound subject is two or more simple subjects joined by a coordinating conjunction (and, or, but, nor, for, so, yet). For example, in the sentence "The cat and the dog jumped on the table," the compound subject is "cat and dog."
  • Complete subject is a simple subject plus any modifiers that describe it. For example, in the sentence "The big, black cat jumped on the table," the complete subject is "The big, black cat."

Here are some more examples of simple subjects, compound subjects, and complete subjects:

Subject
Simple Compound Complete
dog dog and cat The big, black dog
students students and teachers The students in my class
book book or magazine The book or magazine on the table
flowers flowers but not trees The blooming flowers but not the trees
rain rain nor wind Neither rain nor wind
team team for victory The determined team for victory
dog dog yet no owner The abandoned dog yet no owner

How Subjects are used in Sentences?

Subjects are an essential component of sentences and play a crucial role in conveying information. In grammar, the subject is the noun, noun phrase, or pronoun that typically performs the action described by the verb or is associated with a state or condition expressed by the verb.

Here are some ways subjects are used in sentences:

  1. Subject performing an action:
    • "John runs every morning." (John is the subject performing the action "runs.")
    • "The cat chased the mouse." (The cat is the subject performing the action "chased.")
  2. Subject being described:
    • "She is a talented singer." (She is the subject being described as a "talented singer.")
    • "The house appears haunted." (The house is the subject being described as "haunted.")
  3. Subject indicating a state or condition:
    • "The sky is clear." (The sky is the subject indicating the state or condition of being "clear.")
    • "The children were excited." (The children are the subject indicating the state of being "excited.")
  4. Subject in passive voice:
    • "The book was written by Jane." (The book is the subject, even though it receives the action of being "written.")
  5. Subject in a question:
    • "Who is coming to the party?" (Who is the subject of the sentence, and the action is "coming.")
  6. Subject in commands or imperatives:
    • "Please pass the salt." (You is the implied subject in this command, as in "You, please pass the salt.")

Remember, the subject is usually located at the beginning of a sentence, but in some cases, it can appear later in the sentence or be implied. Identifying the subject is crucial for understanding the overall meaning and structure of a sentence.

Why the Subject of a Sentence is Important?

The subject of a sentence is an essential component because it plays a crucial role in establishing the focus and meaning of the sentence. Here are a few reasons why the subject is important:

  1. Grammatical function: The subject is responsible for indicating who or what is performing the action or being described in a sentence. It helps to establish the basic sentence structure and enables proper understanding of the relationships between different parts of the sentence.
  2. Subject-verb agreement: The subject of a sentence determines the form of the verb that follows it. Verbs must agree with their subjects in terms of number (singular or plural) and person (first, second, or third). Understanding the subject helps ensure grammatical accuracy in constructing sentences.
  3. Semantic clarity: The subject provides clarity about the main focus of a sentence. It helps the reader or listener identify the central element or entity being discussed or acted upon. Without a clear subject, the sentence may become confusing or ambiguous.
  4. Information organization: The subject often appears at the beginning of a sentence, allowing for smoother communication and improved readability. By presenting the subject early on, the sentence structure becomes more coherent, enabling readers to anticipate the information that follows and understand the context better.
  5. Topic prominence: The subject often represents the topic or theme of a sentence. It serves as a starting point for introducing new information or providing additional details related to the subject. By highlighting the subject, the writer or speaker can effectively guide the reader or listener's attention and maintain coherence within the text.

Overall, the subject of a sentence helps establish the basic structure, agreement, clarity, and coherence of a sentence, ensuring effective communication and facilitating the understanding of the intended message.

Common issues on usage of the Subject in sentence

When it comes to using the subject in a sentence, there are several common issues that people may encounter. Here are some of them:

  1. Subject-verb agreement: The subject and the verb in a sentence should agree in number. This means that a singular subject requires a singular verb, and a plural subject requires a plural verb. For example:
    • Incorrect: The dogs eats the food.
    • Correct: The dogs eat the food.
  2. Missing or unclear subject: Every sentence should have a clear subject that performs the action or is described in the sentence. Omitting the subject or using a vague pronoun can lead to confusion. For example:
    • Incorrect: Walked to the store. (Missing subject)
    • Correct: I walked to the store.
  3. Subject-object confusion: Sometimes, people mistakenly use an object as the subject of a sentence instead of the correct subject. This can result in grammatically incorrect sentences. For example:
    • Incorrect: Him and I went to the movies.
    • Correct: He and I went to the movies.
  4. Subject pronoun disagreement: When using pronouns as the subject, it's important to ensure they agree with the verb form. For example:
    • Incorrect: They was playing in the park.
    • Correct: They were playing in the park.
  5. Incorrect word order: In some cases, the subject may be placed incorrectly in the sentence, disrupting the clarity and flow. It's important to ensure that the subject is positioned correctly in relation to the verb and other sentence elements. For example:
    • Incorrect: Running in the park was my dog.
    • Correct: My dog was running in the park.
  6. Compound subjects: When there are multiple subjects connected by "and," "or," or "nor," it's crucial to use a plural verb form. For example:
    • Incorrect: The cat and the dog is sleeping.
    • Correct: The cat and the dog are sleeping.

Remember that the subject is a fundamental component of a sentence, and understanding how to use it correctly is essential for clear and effective communication. By being mindful of these common issues, you can improve your sentence construction and avoid common mistakes.

Videos on Sentences

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Exercises on Subjects of Sentences

Underline the subject in each sentence
  1. The cat chased the mouse.
  2. The students are studying for the test.
  3. The dog ate the bone.
  4. The rain fell on the ground.
  5. The flowers bloomed in the spring.

1. cat 2. students 3. dog 4. rain 5. flowers.

Please click here to get a more extensive exercise on the above.

Fill in the blank with the missing subject
  1. _________________ are playing in the park.
  2. _________________ is the president of the United States.
  3. _________________ ate the last piece of cake.
  4. _________________ is my favorite animal.
  5. _________________ is the capital of France.

1. Children 2. Joe Biden 3. I 4. Dog 5. Paris.

Please click here to get a more extensive exercise on the above.

Identify the subject and verb in each sentence
  1. The cat chased the mouse.
  2. The students are studying for the test.
  3. The dog ate the bone.
  4. The rain fell on the ground.
  5. The flowers bloomed in the spring.

1. cat, chased 2. students, are studying 3. dog, ate 4. rain, fell 5. flowers bloomed.

Please click here to get a more extensive exercise on the above.

Identifying different types of subjects
  1. The beautiful, white flowers bloomed in the garden.
  2. The birds and the bees sang in the garden.
  3. The birds sang in the trees.
  4. The car drove down the street.
  5. The cars and trucks drove down the highway.
  6. The cat jumped on the table.
  7. The children played in the park.
  8. The delicious, chocolate cake was eaten by everyone.
  9. The dogs and cats ate their food.
  10. The happy, playful children played in the park.
  11. The noisy, chattering birds sang in the trees.
  12. The old, red car drove down the street.
  13. The students and the teacher went on a field trip.
  14. The teacher gave the students a test.

1. The beautiful, white flowers 2. The birds and the bees 3. The birds 4. The boys and the girls 5. The car 6. The cars and trucks 7. The cat 8. The children 9. The delicious, chocolate cake 10. The dogs and cats 11. The happy, playful children 12 .The noisy, chattering birds 13. The old, red car 14. The students and the teacher 15. The teacher

Please click here to get a more extensive exercise on the above.

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