When we looked at sentence/clause elements, we saw that these could be placed in certain
positions or slots to create a sentence.
Sometimes these slots will be filled by one word, often by phrases.
S (subject slot) V (verb slot) O (object slot) A (adverbial slot)
Merlin followed Arthur carefully.
The
wrinkled, old wizard was
following the crown prince into the forest.
In
the first sentence, each sentence element slot is filled by one word; in the
second sentence, each slot is filled by a phrase. We can define a phrase as a group of words,
working together to fill a sentence element slot.
The
above two sentences are simple, or single clause, constructions. A single clause contains a minimum of a
subject and verb, but can be quite a long structure with object and adverbial
positions also filled. It will only have
one verb slot filled.
SV Merlin shouted
SVO Arthur raised
Excalibur.
ASVOA At that moment, Arthur raised Excalibur above his head.
AASVOA That evening, cautiously, Merlin followed Arthur into the forest.
However
sometimes a sentence element slot is filled by another clause, which contains its
own verb:
SVO Arthur, who was heir to the throne, welcomed the visitors.
The
subject position in this sentence is filled by another clause, containing its
own verb.
Sentences
usually contain a mix of words, phrases and clauses filling the sentence
element slots. These terms occur in many of the different areas of grammar and
we will revisit them often in relevant posts.