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Grammar and StructureGRAMMAR & STRUCTURE — Examples
Compound Sentences

 
 

Examples illustrating the characteristics of compound sentences:

Sentence

Explanation

a) The students walk to the beach.
b) The students go for a swim.

These are two simple sentences.

c) The students walk to the beach, and they go for a swim.

This is one compound sentence.
It has two independent clauses.
It has two subjects: students / they
It has two verbs: walk / go

d) The students walked to the beach, and they went for a swim.

 

The simple sentences are joined by a comma and a conjunction: , and

* It is not always necessary to use a comma before a linking word. If the sentence is short, you may omit the comma.

e) The teachers talk and the students listen.

The verbs agree in tense. Both verbs are in the simple present tense.

*The comma (,) may be omitted with "and" if the sentences are short.

f) The teachers are talking, and the students are listening.

The verbs agree in tense. Both verbs are in the simple present tense.

g) Last year the students learned about sentences, but this year the students are learning about paragraphs.

The verbs show different tenses because the meaning of the sentence shows different times: "last year" is past tense; "this year" is present tense.

h) The students walk to the beach and go for a swim.

 

Omit the second subject when the two subjects are the same.

In this sentence, the second subject has been omitted: and --- go. It is understood that "the students" is the subject of "walk" and of "go".

*It is not possible to omit the second subject in the sentence "The teachers talk and the students listen", because the subjects are different.