To solve the problem of matching the part of speech (in bold) with their usage of the word "down," we will analyze each sentence to determine how "down" is being used:
1. Adjective
The porter was hit by the down train.
2. Preposition
The fire engine came rushing down the hill.
3. Noun
He has seen the ups and downs of life.
4. Verb
Down with the tyrant!
The correct matching is:
1. Adjective - "The porter was hit by the down train." (1-8)
2. Preposition - "The fire engine came rushing down the hill." (2-5)
3. Noun - "He has seen the ups and downs of life." (3-6)