Hi Jackson,
yeah, but when there are negative words (not, don't, never, etc.), you have to be careful, because the position of some adverbs might change the meaning of your sentence completely
That's why these two are different:

I don't really understand what you are trying to say. (I don't understand very well, I don't understand everything, I only understand a part, etc.)
I really don't understand what you are trying to say. (I understand nothing at all, I don't understand, etc.)

The key is the order:
negative + adverb: not completely, not really...
adverb + negative: definitely not, really not, totally not...

Notice that those adverbs are all similar, that is, they all describe something at the highest degree (totally, completely, certainly, definitely, etc.)

Also notice that there are a lot of exceptions. One example:
I'm not always there. (not always, sometimes I'm not there. I might be often there, but not always.)
I'm always not there. (Exception, this is not the idiomatic one, you should say "I'm never there.")

That's all for now. Let's see what the others have to say

Kooyeen wrote:

Hi Jackson, yeah, but when there are negative words (not, don't, never, etc.), you have to be careful, because the position of some adverbs might change the meaning of your sentence completely That's why these two are different: I don't really understand what you are trying to say. (I don't understand very well, I don't understand everything, I only understand a part, etc.) I really don't understand what you are trying to say. (I understand nothing at all, I don't understand, etc.) The key is the order: negative + adverb: not completely, not really... adverb + negative: definitely not, really not, totally not... Notice that those adverbs are all similar, that is, they all describe something at the highest degree (totally, completely, certainly, definitely, etc.) Also notice that there are a lot of exceptions. One example: I'm not always there. (not always, sometimes I'm not there. I might be often there, but not always.) I'm always not there. (Exception, this is not the idiomatic one, you should say "I'm never there.") That's all for now. Let's see what the others have to say

Hi Kooyeen,

Thanks a lot for always helping in such a good way. I always thought you were a girl. I don't know why, perhaps it's your name which sounds to be a girlish name to me. I wish you good health and many years of happiness. Take care. [Suggestions are still welcome]

Best wishes, Jackson