That's what Bob wants to know.

And that's what we're doing on this.

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So, Bob, we're talking about personal pronouns in English.

Now when a pronoun is the subject of a sentence in English, we use I you, he, she, it we or they.

But when it is the object of a verb, we use me, you, him, her, it, us on them, for example.

They gave us some chocolates and we gave them some cake, or I'll lend him my jacket if he'll lend me his jeans.

Now, whether we use you and I or you and me depends upon whether we're talking about the subject of a sentence or the object of a verb.

So as subjects we could say you and I should work together on this project or in the third person.

She and I are going on a date tonight, but as objects of the verb we could say, they only selected you and me for a second interview out of all the candidates or in the third person.

They wouldn't listen to her and me when we argued against their idea.

Now an informal English people still use you and me as the subject of a sentence.

Even though it's known to be wrong on this has led to some confusion between you and I as subjects on you and me as objects.

But I've just explained it to you so you won't make the same mistake, will you?

And of course, don't forget that you and I is we and you and me is us.

So if you're ever confused, just use we or us.

Easy.

Thank you very much for your question, Bob.

They're both correct, and I hope that clarifies the difference for you.

If you have a question for learners questions you can email us on learning dot English at BBC dot co dot UK.

And don't forget, at the end of this video, there is a full summary slide.

Thank you very much for joining me on this.

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