Incomplete Sentences
A sentence is a group of words, or
in some cases a single word, that
makes a statement (My brother listens to dreadful music.),
gives a command, (Turn that noise down!),
asks a question, (What did you say?)
or makes an exclamation (For crying out loud!).
These are incomplete sentences:
Partly because his plan worked well. (no
subject & verb in the main clause)
Which was a good thing. (no main clause)
According to all family members who were present at the picnic. (it
is a phrase and should be followed by a clause)
A wonderful day all round. (no verb)
No doubt that he did a good job. (no subject & verb
in the first clause)