There are three types of sentences.

They are:
1. SIMPLE SENTENCES
2. COMPOUND SENTENCES
3. COMPLEX SENTENCES

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SIMPLE SENTENCES

A simple sentence contains one thought or idea. So it has only one finite verb.

Example:
I went to Sri Lanka last year.

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COMPOUND SENTENCES

A compound sentence contains more than one thought or idea. So such a sentence has more than one finite verb and all sentences in a compound sentence are equal in value. They are joined with co-ordinate conjunctions.

Example:
Last year, I went to Sri Lanka and visited many places of interest.

Last night, I went home late, opened the door, switched on the lights and saw a thief in the house. I tried to catch him but he escaped through the front door.

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COMPLEX SENTENCES

A complex sentence has one main sentence and one or more subordinate sentences. A sentence with one main idea and one or more relevant background ideas is called a complex sentence. These background sentences qualify nouns and modify verbs in the main sentence. We call a main sentence as MAIN CLAUSE and a subordinate sentence (a background sentence) as SUBORDINATE CLAUSE in grammar.

Example:
The man who is reading the paper is Mr. Brown.
The man who is reading a magazine is Mr. Green.
(The underlined sentences are adjective clauses. They modify the noun ‘The man‘.)
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Now, look at these pictures and learn how to modify a verb.

WE can modify a verb by using sentences to give the time, the place, the manner, the cause, the condition etc.; of an action.

All the sentences underlined are subordinate adverb clauses. They give time, cause, manner, condition and place.

After she had had her breakfast, she read the newspaper. After she had read the paper, she washed her clothes. After she had washed her clothes, she bathed. After she had bathed, she put her clothes on the clothes-line. Now, she is drinking a cup of coffee.
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The baby is crying because it is hungry.

Draw as you see it, not as you like it.

Take this umbrella!

Keep the book where it was!