A walking boot.(It is adjective)
A falling tree. (It is adjective)
A gardening book ( It is noun ,but i think it should be adjective.)
Please solve my problem by explanation.
It is not always immediately clear to everybody exactly what the function of the -ing form is when it precedes a noun.
1. I have a weekend job;
walking dogs earns me some useful pocket money.
2.
Walking dogs don't go far without stopping to sniff a bush or lamp post.
3.
Walking boots can be very expensive.
In #1, 'walking' is the subject of the verb 'earns' and therefore functions very much like a noun; however, it has a direct object 'dogs', and so functions very much like verb. This type of
-ing form is often called a 'gerund'
In #2, the -
ing form describes the dogs, very much as an adjective does; it is also very closely related to the verb in 'the dogs are walking'. This type of adjectival -
ing form is often called 'the present participle'.
In #3, the boots are
for walking; 'walking' is a gerund.
So, we have a walking (gerund) boot, a falling (participle) tree and a gardening (gerund) book.
