I work hard/I am working hard today.

[sdgsdg]

Can I say the following?
1. I work hard today.
2. I am working hard today.

 

[Tarheel]

You can make the first one work if you change it slightly, thus: "I work hard every day."

The second one is fine.

 

[sdgsdg]

So I can't use the present simple with the word today and I have to use present continues.
Is that a grammar rules and always.
I can't say, I brush my teeth today, if so, what can I say if I want to tell my parents that.

 

[Tarheel]

Another possibility is you could remove "today" and say, "I work hard."

 

[Tarheel]

There's a remote possibly that you could say "I brush my teeth today" to indicate that's what you plan to do.

If you want to say "I brushed my teeth today" to your parents, fine.

 

[emsr2d2]

There's a remote possibly that you could say "I brush my teeth today" to indicate that's what you plan to do.

I wouldn't use (even remotely) that sentence to express future intention.

 

[Tarheel]

@emsr2d2 Wouldn't it be the same as "I go to work today"?

 

[emsr2d2]

@emsr2d2 Wouldn't it be the same as "I go to work today"?

I wouldn't use that either.

 

[sdgsdg]

Another possibility is you could remove "today" and say, "I work hard."

Can I say the following?
1. I always work hard .
2. I always work hard, Yesterday, today, and tomorrow.
3. I always brush my teeth, Yesterday, today, and tomorrow.

 

[sdgsdg]

I wouldn't use that either.

I am going to work today.
Is that correct?

 

[Piscean]

Can I say the following?
1. I always work hard .
2. I always work hard, Yesterday, today, and tomorrow.
3. I always brush my teeth, Yesterday, today, and tomorrow.

#1 is OK.
In #2 and #3, the words 'Yesterday, today, and tomorrow' are redundant.

 

[Piscean]

I am going to work today.
Is that correct?

It's grammatically possible. Whether it's appropriate depends on the context.

 

[Tarheel]

Can I say the following?
1. I always work hard .
2. I always work hard, Yesterday, today, and tomorrow.
3. I always brush my teeth, Yesterday, today, and tomorrow.

The first one is fine. In fact, there are about a million things you could use instead of "work hard".

I disagree with Piscean on #2 and #3. I don't think those work at all. If you want to emphasize what you said in the first sentence, you could say you worked hard yesterday, you will work hard today, and you will work hard tomorrow. (It's a bit odd but possible.)

Could you wait until you get a response to one post for posting another one?

 

[Tarheel]

I am going to work today.
Is that correct?

Yes, that's fine.

 

[emsr2d2]

Can I say the following?
1. I always work hard .
2. I always work hard, Yesterday, today, and tomorrow.
3. I always brush my teeth, Yesterday, today, and tomorrow.

Errors:
1 - You have used a space before the full stop. Otherwise, it's fine.
2 and 3 - You should either use a full stop after "hard" and "teeth" or change the first letter of "yesterday" to lower-case. However, even with those changes, they are unnatural because, as Piscean said, "yesterday, today and tomorrow" is completely unnecessary.

 

[sdgsdg]

You can make the first one work if you change it slightly, thus: "I work hard every day."

The second one is fine.

What's the difference between:

1. I work hard everyday.
2. I always work hard.

 

[Tarheel]

"I work hard every day" and "I always work hard" mean the same thing.

"Everyday" is an adjective. For example, an everyday word is a word that is used regularly.

 

[sdgsdg]

Both are in present simple. Is that correct?

 

[Tarheel]

Yes.

 

[emsr2d2]

Both are in present simple. Is that correct?

We use the present simple when talking about regular occurrences/habitual actions/absolute facts.

It rains a lot in Wales.
I play tennis every Wednesday.
Water boils at 100 degrees Celsius.