The Sentence
Let’s read these words.
poor, is, lady, she, a
Do these words convey a complete idea or thought?
No, they do not express any meaningful idea.
Let’s read these words arranged in different way.
She is a poor lady.
Now we see, these words express a meaningful idea.
So,
1. A sentence is a group of words that conveys a complete idea.
2. A sentence always makes sense.
3. A sentence always starts with capital letter and end with a full stop, question mark or exclamation mark.
4. A sentence must have at least one doing word i.e. verb.