the word "too"

[wferra]

I was told recently that I should only use the word "too" if it can
be replaced by the word "also". Are there any exceptions to that rule?
I did not know this.

[leta]

Originally Posted by wferra

I was told recently that I should only use the word "too" if it can
be replaced by the word "also". Are there any exceptions to that rule?
I did not know this.

yes, in negative sentaces you should not use "too" but "either".
"I don't like watching TV" - And he doesn't either.

[Temico]

I was told recently that I should only use the word "too" if it can be replaced by the word "also"

That is not always correct. e.g.

a)The weather is too hot in the desert at midday.

b) These sums are too difficult for Primary School students.

if you replace too with also in the above sentences, the meaning will change.

[Casiopea]

Originally Posted by wferra

. . . use the word "too" if it can be replaced by the word "also".

Teachers often give that "rule of thumb" to their students as a way to differentiate the homophones, "too" and "to". And, as Leta and Temico's examples tell us, there are exceptions to that rule-of-thumb.

"too" has more than one meaning, so it isn't synonymous with "also", always.