Using me too, me neither, so do I, I do too, I don't either, and neither do I

Here's the plan for today. We are going to take each pair one at a time, and we're going to study them together. Me too and me neither will be first.

I do too, I don't either, so do I, and neither do I will be last.

After this, we are going to have a practice quiz to see how good you have become.

And somewhere in the video, I'm going to give you a bonus key expression. Do not miss this one because it will make your life so much easier.

Now, let's go with the first pair: me too and me neither.

Here's a quick quiz. Imagine that your friend says, "I like traveling." You like traveling too, so what do you say? You say me too. Great!

Now, if your friend says, "I don't like rain," and you don't like rain, what do you say? Me too, right?
No, you cannot say me too. You have to say me neither.

Here's the reason why. We use me too when we have a positive sentence like I like traveling, and we use me neither every time we have a negative sentence. I don't like rain is a negative sentence, so you must say me neither.

Now let's practice.

Your friend says, "I didn't go to the party."
And you didn't go to the party. What do you say?
You have two options: me too or me neither. What's your choice?
Me neither is the best choice because you see the n't in didn't — so it's a negative sentence.

Your friend says, "I can speak English."
And you can speak English. So what do you say?
Me too. It's a positive sentence.

Your friend says, "I will be late to class."
And you will be late to class. So what do you say?
Me too. Positive sentence.

"I'm not a bad person."
You are not a bad person. So what do you say?
Me neither, because of the not. Not means it's a negative sentence.

Now, the key point to remember is that me too and me neither can be used with all statements. They do not change form. So if it's negative, it's always me neither, and if it's positive, it's always me too. Remember this; it's important.

On the other hand, the next pairs that we are going to study are different because the auxiliary do changes depending on the sentence. This is more difficult, so we’ll study it together now.

Before we go into the second pair, I would like to remind you to like us, and don't forget to subscribe because it really helps us make good videos for you.

So now, the second pair: I do too and I don't either.

Here's something different.

Your friend says, "I like pizza."
And you like pizza. What do you say? You say me too. We just studied this; you already know this. How about this one? Which one do you pick?
Of course, you’re going to pick I do too because it's a positive sentence. Me too and I do too are the same.

Now here’s the reason.

Important point: "I like pizza." There is no visible auxiliary verb. An auxiliary verb is a helping verb. You cannot see it, but in reality, what your friend is saying is I do like pizza, but we don’t say the do. That’s why the do shows up when you agree, and you say I do too. So we are using the invisible auxiliary do.

Now, if your friend says, "I don't like pizza," there is a visible auxiliary verb, don't. "I don’t like pizza," so now that's why you're going to say I don't either.

"I don't smoke."
You don’t smoke. What do you say?
Me neither or I don't either.
Me neither and I don't either are both the same.

"I eat a lot of junk food."
You eat a lot of junk food. So what do you say?
Me too or I do too.

"I have lots of friends."
You have a lot of friends too. What do you say?
Me too or I do too.

"I don't know where Kim lives."
And you don't know where Kim lives. What do you say?
Me neither or I don't either, because it's a negative sentence.

"I will visit Sam tomorrow."
You will visit Sam tomorrow. What do you say?
Me too.

Did you say I do too?
No, you cannot say I do too. You have to say I will too because here we have a visible auxiliary, and it is not the auxiliary do; it is the auxiliary will, so we say I will too.

"I have seen that movie."
You have seen that movie. What do you say?
Me too.

Did you say I do too?
No, you cannot say I do too. Now you understand.
What is the auxiliary? You have to say I have too because have is the visible auxiliary in the sentence.

"I don't speak Chinese."
You don't speak Chinese. What do you say?
Me neither or I don't either.

"I can't go to the party on Friday."
You cannot go to the party. What do you say?
Me neither.
Did you say I don't either?
No, it doesn’t work. You should know by now.

So what do you say instead?
I can't either, because can't is your auxiliary in this sentence.

"I am a good student."
You are a good student. So what do you say?
Me too.
I do too does not work.

So what do you say instead?
I am too.

Now be careful with this one because the verb to be is a verb, but it's also an auxiliary. It has both functions at the same time, so every time you have the verb to be, it is used as the auxiliary in your agreement sentence. So we say I am too or I am not either.

"I liked the movie Top Gun."
You like that movie too. What do you say?
Me too.

Did you say I do too?
Be careful with this one; it is a trick. You cannot say I do too, but you can say I did too.

Why is that?
The reason is that liked is a past verb. In fact, what your friend is saying is I did like the movie Top Gun. That’s what your friend is really saying, so the auxiliary is not do; the auxiliary is did. That’s why we say I did too.

Now let's go with the third pair: so do I and neither do I.

"I play football."
You play football. What do you say?
Of course, you already know me too, and you already know I do too.

How about this one?
So do I.

Me too, I do too, and so do I are all the same.

Okay, so you can use them all the time.
They all have the same meaning.
But the important point, once again, is that there is no visible auxiliary verb.

In fact, your friend said I do play football, so that’s why we say so do I.

"I don’t play hockey."
You don’t play hockey. What do you say?
Me neither.
I don’t either.
Neither do I.

So, in the negative form, all of these are exactly the same as well.

Once again, the important point: I don’t play hockey, so you see there is a visible auxiliary verb, which is don’t. That’s why we say neither do I.

Now, be careful! You don’t say neither don’t I because neither is already a negative word. That’s why we say neither do I.

"I don’t smoke."
You don’t smoke. What do you say?
Me neither.
Neither do I.

As we said, they are the same, and remember, neither is a negative word because it actually means not either.

So, that’s why we say neither do I, not neither don’t I.

"I don’t drink much."
You’re the same.
What do you say?
Me neither.
Neither do I.

"I spend too much money."
You feel the same way.
What do you say?
Me too.
So do I.

"I don’t have much free time."
You’re in the same situation.
What do you say?
Me neither.
Neither do I.

"I am studying hard these days."
Same for you.
What do you say?
Me too.
So do I. No, that doesn’t work! Did you catch it?

The correct answer is so am I because the verb to be here is the auxiliary. So, be + studying (be + -ing form) requires so am I.

"I would love to meet you."
You feel the same way.
What do you say?
Me too.

So do I doesn’t work; be careful! There’s another auxiliary. What do you say?
So would I.

"What is your auxiliary in this case?"

"I am not interested in science."
You feel the same way. What do you say?
Me neither.
Neither do I. No, that doesn’t work!

The correct answer is neither am I because of the auxiliary be.

In this case, be is both the verb and the auxiliary.

"I traveled around India last year."
You did the same. What do you say?
Me too.

But be careful here. It’s not so do I. What is it?
So did I because the verb is in the past tense.

We explained this earlier: What your friend is really saying is I did travel around India last year, so the correct response is so did I.

Now it’s quiz time! I’m giving you 10 questions, and be careful—it won’t be easy. This is your chance to test yourself. Let’s go!

"I will have a cup of coffee."
Here are your five options. There are three correct answers:
Me too.
I will too.
So will I.

Great job if you got this one; it was a hard one.
Since will is the auxiliary in this case, you had to change it. You couldn’t use I do too or so do I.

"I have never been to Paris."
Same situation with your five choices. Once again, there are three correct answers:
Me neither.
I haven’t either.
Neither have I.

"I don’t have a car."
You’re in the same situation.
Me neither.
I don’t either.
Neither do I.

"I would like to go on vacation."
Me too.
I would too.
So would I.

"I went to Italy last year."
Me too.
I did too.
So did I.

"I’m not going to buy a car."
Me neither.
I am not either.
Neither am I.

"I’m interested in photography."
Me too.
I am too.
So am I.

"I take the bus to work."
Me too.
I do too.
So do I.

"I can’t swim."
Me neither.
I can’t either.
Neither can I.

"I worked hard last week."
Me too.
I did too.
So did I.

Good job, everyone! I know this is very confusing, so today, I want to give you a key expression—a key expression that will make your life so much easier because it will replace all of this.

Here’s the key expression: same here.

Now listen to this carefully: same here.

Look at this:

• "I didn’t go to the party." Same here.
• "I can speak English." Same here.
• "I will be late to class." Same here.
• "I’m not a robot." Same here.

It works with positive and negative sentences, and it works with all auxiliary verbs.

So instead of remembering so do I, so am I, neither am I, neither can I, and so on, you can simply say same here if you’re not sure. It will save you so much trouble.

Good job, everyone, and don’t forget to check out our other videos. Like us and subscribe, and we’ll see you in our next video. Bye-bye!