The subjective pronouns are I, you, he, she, it, we and they. Subjective pronouns are used to replace the name of a person and do the action the verb suggests.
Should I go pick up the pizza now?
We like the new English professor.
What will they do now that the house is sold?
Would you prefer tea or coffee?
One of the most common mistakes made when using subjective pronouns is when using the compound subject you and I. Because you is the same in the subjective and the objective case, people get confused between I and me. The way to check this is to remove the second-person pronoun.
Should you and me go pick up the pizza now?
If the sentence read “Should me go pick up the pizza?”, we would know it was wrong. We could also look for the preposition: there isn’t one.
Should you and I go pick up the pizza now?