One of the most common grammatical errors made in speaking today is using the pronouns me, him, and her in the subject of a sentence instead of I, he, and she.  We do it without even realizing it.  It sounds so normal that we don't think twice about it.  Many people do not even care whether it is right or wrong.  However, it is essential that we strive to be as grammatically correct as possible if, for no other reason than to be clear and concise.  This minimizes confusion and misunderstandings.

The difference between a subject and an object is quite simple.  The subject is the person or thing that is doing the action of the verb.  The object is the recipient of the action.  The same is true for pronouns.  

• I hit him.
• She loves me.
• He kisses her.

"I, she, and he" are all the subjects of those three sentences.  In the first sentence, "I" is doing the hitting and "him" is receiving the hitting.  In the second sentence, "she" is doing the loving and "me" is receiving the love.  In the third sentence, "he" is doing the kissing and "her" is receiving the kiss.

SUBJECTIVE PRONOUNS

Now that there is an understanding between the difference between a subjective pronoun and an objective pronoun, let's take a closer look at them.  Here are a few examples of incorrect subjective pronouns.

• James and me are going to the store.
• Him and Steven watched the game.
  
• Her and Jill went shopping.
  

This is definitely one of the more common mistakes made in modern speech.  The funny thing is that it is also one of the easiest to correct.  The most frequent occurrence is when the speaker is using multiple subjects, such as:

• James and me
• him and Steven
  
• her and Jill
  

Now, truth be told, the easiest way to solve this dilemma is just to say, 

• We are going to the store.
• We watched the game.
  
• We went shopping.

But there are times when you need to be more specific and "we" just won't be sufficient.

So the question becomes:  Should it be:

• James and me?  
• Or "James and I"?

And the way to answer that question is simple.  Take James out of the sentence for a second.  Would you ever find yourself saying, "Me am going to the store"?  I mean, unless you wear a loincloth and walk around with a club, the chances of you saying that are slim.  The majority of people would say "I am going to the store."  So the correct way to say it would be:

• James and I are going to the store.

What about the second sentence?  Should it be "Him and Steven"?  Or "He and Steven"?  Again, let's take Steven out of the sentence for a second.  I don't think many of you would ever say "Him watched the game."  I think you'd agree that you'd say "He watched the game."  So the correct way to put that sentence is "He and Steven watched the game."  Or, perhaps even better yet:

• Steven and he watched the game.

That leaves the third sentence.  What do you think?  Would you say, "Her and Jill went shopping"?  Let's follow the simple steps.  Take Jill out of it.  And once again, we find ourselves with "Her went shopping."  So the correct way to put it is "She and Jill went shopping."  Or :

• Jill and she went shopping.

OBJECTIVE PRONOUNS

That leads us to the objective use of the pronouns.  Granted, those are not quite as misused as the subjective pronouns are, but it does happen.  And once again, simplifying the sentence will help you solve the dilemma.  Let's look at a few examples.

• Joe went to the store with Steve and I.
  

Once again, take Steve out of the sentence.  Would you say "Joe went to the store with I"?  I mean, you could, but you'd sound a tad bit funny.  No, you'd probably say "Joe went to the store with me."  So now put Steve back in.  

• Joe went to the store with Steve and me.

So whenever you have multiple nouns together in either the subject or the object and one of those nouns is a personal pronoun, try that simple trick to help you out.  The more you practice this, the easier it will become.  They say that it takes 23 times for something to become a habit.  Do it enough and it will become habitual.