What are compound subjects and compound objects?
A subject or an object of a sentence is compound if it describes 2 or more things or people.
Mary and Jane went to the same school.
In this sentence the subject describes 2 people, so it is a compound subject.
Love and hate are 2 opposite feelings.
Here the compound subject describes 2 different ideas (feelings)
Last summer I visited Italy and France
I like sport and books