Thank you very much for your corrections. I still have a few questions on my previous post.

1. I'm as fast as a lightning.
I'm fast like lightning.
I'm fast like a lightning. (?)
I'm lightning fast.
2.The personification is usually made (recognizable?) with the use if the capital letter.
3. Being the wind invisible and not provided with bones or feet, it is useless to offer him a chair just like (?) you can't offer a sofa to the air.
4. The mirror is the symbol of the aging process (or ageing process?).
5. People don't have time to stare at nature's beauty. Therefore, they aren't as happy as the squirrels in the woods hiding their nuts in grass.

1 answer

1. I'm as fast as a lightning.
I'm fast like lightning.
I'm fast like a lightning.<~~no!
I'm lightning fast.
The others are OK.

2. Personification is usually recognizable with the use if the capital letter.

3. Because the wind is invisible and not provided with bones or feet, it is useless to offer him a chair, just as you can't offer a sofa to the air.

4. The mirror is the symbol of the aging process.

5. People don't have time to stare at nature's beauty. Therefore, they aren't as happy as the squirrels in the woods hiding their nuts in the grass.