For
a sentence to be complete in English, it requires a finite verb. A finite verb shows tense and can also show
number and person when using the present tense (e.g. ‘sings’ denotes present
tense, third person singular). A finite clause or sentence can stand on its own
and make sense, e.g.
She is staring into space. (present
progressive/continuous)
He
was frightened by the traffic. (simple past - passive
voice)
She frightened the cat. (simple past)
In
the above examples, as in usual sentences, the subject is included. When present or past participles are used as
a non-finite verb, the subject is rarely included and the participle appears on
its own. E.g.
Staring into space – present participle ‘staring’
Frightened by the noise – regular past participle
Lit by a candle - irregular past participle
Past
participles often look like the simple past tense with regular verbs having the
same –ed suffix. However for irregular verbs (often the verbs coming from Old
English), the form is different.
(For more on past
participles, click on the past participle label on the right-hand side of my
blog.)
Clauses
containing non-finite verbs are called non-finite clauses. Because they don’t contain a finite verb, they
can’t be the main clause in a sentence as they would not make sense standing
alone as a simple sentence. Therefore, they must stand as a subordinate clause
and require a finite clause to complete the sentence. In this way, complex sentences are formed.
Staring into space, he heard nothing
around him.
Frightened by the noise, the horse reared up.
Lit by a candle, the room looked romantic.
Using
participles in non-finite clauses to create complex sentences adds variety to children’s
writing. They can also experiment with swapping the clauses around for effect
(and investigating the correct punctuation to use). What is more effective?
Frightened by the noise, the horse reared up.
The horse reared up, frightened by
the noise.
We
can also add ‘to’ to the base form of the verb to create another non-finite
form: the infinitive, e.g. to light, to drive.
To light a candle, you will need a
match.
Non-finite clauses encourage children to vary
their sentence structure. In effect, the
non-finite construction is filling the same function as a conjunction, by
joining two clauses together within a sentence.