Question

define clausr with the help of an example and mark subject and verb in it​

Answer 1

A clause is comprised of a group of words which includes a subject and a finite verb. A clause contains only one subject and one verb.
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Example:
I graduated last year. (One clause sentence)
When I came here, I saw him. (Two clause sentence)
When I came here, I saw him, and he greeted me. (Three clause sentence)