"too heavily" vs "heavily enough"

Question

1. It had been snowing too heavily for me to leave the house.

Use enough:

2. It had been snowing heavily enough for me to stay indoors.

Source: The Communicative Grammar of English Workbook - Page 14

Why does the author change leave the house into stay indoors?

I understand it (too carries negative meaning \ enough carries positive meaning) so I dislike the result or I hate it in

1. It is so difficult for me to leave the house due to the much snow.
2. Positive result (The snow came down to such extent that I couldn't go out, so I would rather stay at home).

Could you please give me another interpretation?

Answer 1

The first sentence is this:

It had been snowing too heavily for me to leave the house.

If you say:

It had been snowing too heavily for me to stay indoors.

That has the opposite meaning of what you intend to say. It means it was snowing so heavily that you could not remain indoors (you had to go outside).

So you need to substitute something for too heavily. That substitution is heavily enough in your example:

It had been snowing too heavily enough for me to stay indoors.

There are many other ways to express the same idea with very similar words, but if the only thing you can replace in the sentence is too heavily, and you can't make any other changes, then I suppose heavily enough is best.

IMHO, a better construct would be to use so heavily that and you wouldn't have to make any substitutions at all:

It had been snowing so heavily that I could not leave the house.

It had been snowing so heavily that I had to stay inside.

Answer 2

I. "Too and enough" comparison.

OP's query

Why does the author change "leave the house" into "stay indoors"?
Could you please give me another interpretation?

It is necessary to understand the meaning of "too" and "enough" and how to use it in a sentence

Too is mostly used as an adjective to mean to a greater extent than desirable or less than needed.
Enough can be used as adverb, adjective or pronoun. It is used to say that a person has as much of something as necessary.

too more or less than necessary
enough as much as necessary

For example:
1.The news is too good to be true. (The news is better than what we would expect.).
2.You have enough time to get ready for school. (not too much or too little)

In English grammar, "too" means more than the necessary amount, while "enough" means the exact amount that is necessary. "Not enough" means less than the necessary amount. For example, "My coffee is too cold (to drink)" can be rephrased as "my coffee is not hot enough"

II. "too and enough" usage in a sentence

Why does the author change leave the house into stay indoors?

"leave the house" has a contrasting meaning to "stay inside". This is how we change the sentence when we use "enough" instead of "too" in a sentence.
Here's an exercise from a grammar book to help you better understand the concept.
.
Ref Adventures with Grammar and Composition, Beena Sugatham. Oxford Printing Press.

Rewrite these sentences in two ways. One using too and the other using enough. You may use not along with the adjectives suggested in the brackets..
.
1.John is so young that he can't have a driver's licence. (old)
John is too young to have a driver's licence.
John is not old enough to have a driver's licence..
.
2 The sofa is so broad that it wouldn't fit in through the door. (narrow).
The sofa is too broad to fit in through the door.
The sofa is not narrow enough to fit in through the door..
.
3.The wire is so short, it won't extend till the plug. (long).
The wire is too short to extend till the plug.
The wire is not long enough to extend till the plug..
.
4.The T-shirt is so small, it won't fit me. (big).
The T-shirt is too small to fit me.
The T-shirt is not big enough to fit me.