What type of sentence is this, "They sat and listened to the speech."?

In the sample sentence, "They sat and listened to the speech", this sentence is an example of a simple sentence. A simple sentence only consists of one independent clause. The subject is "they", and the predicate is "sat and listened to the speech". The word 'and' only indicates that there are two verbs used in the sentence and doesn't link two different clauses.

Explanation:

active voice: my father cut the tree.

passive voice: the tree was cut by my father.

active voice: people buy newspapers every day.

passive voice: newspapers are bought (by people) every day.

active voice: people have been using movies as political propaganda since world war ii.

passive voice: movies have been used as political propaganda since world war ii.

active voice: donna gave me my birthday present.

passive voice: i was given my birthday present (by donna). / my birthday present was given to me (by donna).

active voice: mom will leave the keys on the counter.

passive voice: the keys will be left (by mom) on the counter.

the words in parentheses are the agent of the passive voice and can be omitted when obvious, generic, or simply unnecessary.

an unbound book has no cover; paris is a single man

explanation: