There are 3 Kinds of English Sentences: SIMPLE COMPOUND COMPLEX
A simple sentence consists of one clause containing a SUBJECT VERB (OBJECT depending on the verb)
Example: Randy drove the car.
SUBJECT / VERB / OBJECT
The second KIND OF SENTENCE is = THE COMPOUND SENTENCE
Here we use two INDEPENDENT CLAUSES and CONNECT them together with a CONJUNCTION.
Sentences: Part 1
Independent Clauses can actually stand alone as Independent Sentences. For example:
Greg ate a sandwich.
Greg drank some juice.
But with a Conjunction we can combine these into a COMPOUND SENTENCE:
Greg ate a sandwich AND drank some juice.
The Third Kind of Sentence in English is the COMPLEX SENTENCE.
We form these by combining
an INDEPENDENT CLAUSE with a DEPENDENT CLAUSE
A DEPENDENT CLAUSE “depends” or relies on the INDEPENDENT CLAUSE: It cannot stand alone as a separate sentence and still make sense.
An example is,
When I finish writing, I’m going running.
[DEPENDENT CLAUSE + INDEPENDENT CLAUSE]
To say, “When I finish writing…” and not say anything else to complete it, is just confusing in English = It’s a DEPENDENT CLAUSE relying on the INDEPENDENT CLAUSE to give it meaning and context. It cannot stand on it’s own, so in a sense the INDEPENDENT CLAUSE “holds up” or “supports” the DEPENDENT CLAUSE.