🔹 Sentence Forms in English Grammar

Sentence forms are different ways sentences are structured or expressed. In exams (WB Board, CBSE, WBCS, SLST), this topic is very important.

There are three main types of sentence forms based on structure:

1️⃣ Simple Sentence

A simple sentence has one independent clause (one subject + one predicate).

Structure:

Subject + Verb + (Object/Complement)

Examples:

• She sings well.

• I went to school.

• He is very honest.

Even if it is long, it is simple if there is only one finite verb.

Example:

• Having finished the work, he went home.
  (Still simple because only one main verb: went)

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2️⃣ Compound Sentence

A compound sentence has two or more independent clauses joined by coordinating conjunctions:

and, but, or, so, yet, for

Structure:

Clause 1 + conjunction + Clause 2

Examples:

• He worked hard, and he passed.

• She is poor but honest.

• I tried hard, but I failed.

Both parts can stand alone.

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3️⃣ Complex Sentence

A complex sentence has:

• One main clause

• One or more subordinate clauses

Subordinate clauses are joined by:

• because

• although

• if

• when

• who

• that

• which

• since

• while

Examples:

• I know that he is honest.

• Although he is poor, he is happy.

• This is the boy who won the prize.

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🔹 Sentence Forms Based on Function

Sentences are also classified by purpose:

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1️⃣ Declarative (Assertive)

Makes a statement.

• She is happy.

• I live in Kolkata.

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2️⃣ Interrogative

Asks a question.

• Are you ready?

• Where do you live?

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3️⃣ Imperative

Gives command, advice, or request.

• Close the door.

• Please help me.

• Work hard.

(Subject is usually hidden: "You")

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4️⃣ Exclamatory

Expresses strong emotion.

• What a beautiful day!

• How happy she is!

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🔹 Transformation Between Forms

This is important for exams.

Simple → Compound

He is poor but honest.
→ He is poor, but he is honest.

Simple → Complex

Being tired, he slept.
→ As he was tired, he slept.

Complex → Compound

Although he is poor, he is happy.
→ He is poor, but he is happy.

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🔹 Quick Comparison Table

Type	Clauses	Conjunction Used
Simple	One	No conjunction
Compound	Two independent	and, but, or
Complex	One main + subordinate	because, although, who, etc.